Dual cam cartridge based feature for unlocking a surgical stapler lockout

ABSTRACT

A staple cartridge configured for use with a surgical stapling device is disclosed. The stapling device includes a lockout for prevent operation of the device. The staple cartridge includes a first cam surface configured to move the lockout from a locked position to an intermediate position when the staple cartridge is initially inserted into the device. The staple cartridge further includes a second cam surface configured to move the lockout from the intermediate position to an unlocked position when the staple cartridge is operably seated in the device. The first cam surface is proximal to the second cam surface and may be vertically displaced therefrom.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the benefit of U.S. Provisional PatentApplication Ser. No. 62/866,208, entitled STAPLE CARTRIDGES WITHFEATURES FOR DEFEATING LOCKOUTS IN SURGICAL STAPLING DEVICES, filed Jun.25, 2019, of U.S. Provisional Patent Application Ser. No. 62/807,310,entitled METHODS FOR CONTROLLING A POWERED SURGICAL STAPLER THAT HASSEPARATE ROTARY CLOSURE AND FIRING SYSTEMS, filed Feb. 19, 2019, of U.S.Provisional Patent Application Ser. No. 62/807,319, entitled SURGICALSTAPLING DEVICES WITH IMPROVED LOCKOUT SYSTEMS, filed Feb. 19, 2019, andof U.S. Provisional Patent Application Ser. No. 62/807,309, entitledSURGICAL STAPLING DEVICES WITH IMPROVED ROTARY DRIVEN CLOSURE SYSTEMS,filed Feb. 19, 2019, the disclosures of which are incorporated byreference herein in their entireties.

BACKGROUND

The present invention relates to surgical instruments and, in variousarrangements, to surgical stapling and cutting instruments and staplecartridges for use therewith that are designed to staple and cut tissue.

BRIEF DESCRIPTION OF THE DRAWINGS

Various features of the embodiments described herein, together withadvantages thereof, may be understood in accordance with the followingdescription taken in conjunction with the accompanying drawings asfollows:

FIG. 1 is a perspective view of a powered surgical stapling system;

FIG. 2 is a perspective view of an interchangeable surgical shaftassembly of the powered surgical stapling system of FIG. 1;

FIG. 3 is an exploded assembly view of portions of a handle assembly ofthe powered surgical stapling system of FIG. 1;

FIG. 4 is an exploded assembly view of the interchangeable surgicalshaft assembly of FIG. 2;

FIG. 5 is another partial exploded assembly view of a portion of theinterchangeable surgical shaft assembly of FIG. 4;

FIG. 6 is an exploded perspective assembly view of a surgical staplingdevice and staple cartridge of a surgical stapling assembly;

FIG. 7 is a perspective view of a first lockout spring of the surgicalstapling device of FIG. 6;

FIG. 8 is a partial side elevational view of a portion of the surgicalstapling device of FIG. 6 showing the first lockout spring in retainingengagement with a firing member thereof and prior to insertion of asurgical staple cartridge into a first jaw of the surgical staplingdevice;

FIG. 9 is a top view of the portion of the surgical stapling device ofFIG. 8;

FIG. 10 is an exploded view of portions of the surgical stapling deviceof FIG. 8 showing an initial insertion of a cartridge assembly thatcomprises a retainer that is attached to a staple cartridge wherein anauthentication key on the retainer is engaging the first lockout springof the surgical stapling device;

FIG. 11 is a perspective view of the authentication key of the retainerof FIG. 10;

FIG. 12 is a top view of the authentication key of the retainer of FIG.11;

FIG. 13 is a side view of the authentication key of the retainer of FIG.11;

FIG. 14 is another top view of a portion of the surgical stapling deviceof FIG. 8 illustrating an initial insertion of the cartridge assembly ofFIG. 8 into the first jaw of the surgical stapling device;

FIG. 15 is another top view of the portion of the surgical staplingdevice of FIG. 14 after the retainer has been removed from the staplecartridge that is operably seated in the first jaw of the surgicalstapling device;

FIG. 16 is a side elevational view of a portion of the surgical staplingdevice of FIG. 6 with a spent staple cartridge seated in the first jawand the firing member in a starting position;

FIG. 17 is another side elevational view of the surgical stapling deviceand spent staple cartridge of FIG. 16 showing a second firing memberlockout in a locked position, wherein the firing member is preventedfrom moving distally during a staple firing stroke;

FIG. 18 is a side elevational view of a portion of the surgical staplingdevice of FIG. 6 with an unfired staple cartridge seated in the firstjaw and the firing member in a starting position;

FIG. 19 is another side elevational view of the surgical stapling deviceand unfired staple cartridge of FIG. 18 showing the second firing memberlockout in an unlocked position, wherein a sled in the staple cartridgeis in unlocking engagement with the firing member;

FIG. 20 is an exploded perspective assembly view of a surgical staplingdevice and staple cartridge of another surgical stapling assembly;

FIG. 21 is a partial side elevational view of a portion of the surgicalstapling device of FIG. 20 during an initial insertion of a cartridgeassembly comprising a retainer attached to a staple cartridge into thesurgical stapling device;

FIG. 22 is another partial side view of the surgical stapling device ofFIG. 21 after the cartridge assembly has been seated in a first jaw ofthe surgical stapling device and prior to removal of the retainer fromthe staple cartridge;

FIG. 23 is another partial side view of the surgical stapling assemblyof FIG. 22 after the retainer has been removed from the staplecartridge;

FIG. 24 is a perspective view of a proximal end of another staplecartridge;

FIG. 25 is a partial side elevational view showing an initial insertionof the staple cartridge of FIG. 24 into a surgical stapling device witha first firing member lockout thereof in an engaged or locked position;

FIG. 26 is another partial side view of the surgical stapling device ofFIG. 25, with the staple cartridge of FIG. 24 operably seated thereinand the first firing member lockout in a disengaged or unlockedposition;

FIG. 27 is an exploded perspective assembly view of a surgical staplingdevice and staple cartridge of another surgical stapling assembly;

FIG. 28 is a partial side elevational view of a portion of the surgicalstapling device of FIG. 27 illustrating a first lockout arm of a firstlockout in a jaw locking position;

FIG. 29 is a top view of portions of the surgical stapling device ofFIG. 28 with the first lockout arm in the jaw locking position;

FIG. 30 is another top view of portions of the surgical stapling deviceof FIG. 29 with the first lockout arm in a jaw closure position;

FIG. 31 is a partial bottom perspective view of the surgical staplingdevice of FIG. 29 with the first lockout arm in the jaw lockingposition;

FIG. 32 is a partial perspective view of a proximal end of a cartridgeassembly comprising another retainer attached to a staple cartridge;

FIG. 33 is a bottom perspective view of a proximal end portion of theretainer of FIG. 32;

FIG. 34 is a top view of the proximal end of the retainer of FIG. 33;

FIG. 35 is a side view of the proximal end of the retainer of FIG. 34;

FIG. 36 is another top view of portions of the surgical stapling deviceof FIG. 29 during an initial insertion of the cartridge assembly of FIG.32 therein;

FIG. 37 is another top view of portions of the surgical stapling deviceof FIG. 36 after the cartridge assembly has been seated therein;

FIG. 38 is another top view of portions of the surgical stapling deviceof FIG. 37 after the retainer has been removed from the staple cartridgeseated therein;

FIG. 38A is a top view of portions of the surgical stapling device ofFIG. 37 with another cartridge assembly seated therein;

FIG. 39 is a partial perspective view of another staple cartridge withan authentication key folded into a cartridge pan of the staplecartridge;

FIG. 40 is a top view of another surgical stapling device illustratingan initial insertion of the staple cartridge of FIG. 39 therein;

FIG. 41 is a side elevational view of the surgical stapling device andstaple cartridge of FIG. 40;

FIG. 42 is another top view of the surgical stapling device of FIG. 40with the surgical staple cartridge of FIG. 39 operably seated therein;

FIG. 43 is a partial perspective view of another staple cartridge withan authentication key folded into a cartridge pan of the staplecartridge;

FIG. 44 is a partial perspective view showing the staple cartridge ofFIG. 43 operably seated in another surgical stapling device;

FIG. 45 is a side elevational view of the surgical stapling device andstaple cartridge of FIG. 44 with a first lockout arm of the staplingdevice retained in a jaw closure position;

FIG. 46 is another perspective view of the surgical stapling device andstaple cartridge of FIG. 44, during an initial insertion of the staplecartridge into the surgical stapling device;

FIG. 47 is a partial perspective view of another staple cartridge withan authentication key folded into a cartridge pan of the staplecartridge;

FIG. 48 is an exploded perspective assembly view of a surgical staplingdevice and staple cartridge of another surgical stapling assembly;

FIG. 49 is a side elevational view of the surgical stapling device ofFIG. 48 with a first lockout arm of the surgical stapling deviceretained in a jaw locking position;

FIG. 50 is a top view of the surgical stapling device of FIG. 49, withthe first lockout arm in the jaw locking position;

FIG. 51 is a side elevational view of the surgical stapling device ofFIG. 49 with the first lockout arm in a jaw closure position and ananvil thereof in a closed position;

FIG. 52 is another top view of the surgical stapling device of FIG. 49illustrating an initial insertion of a cartridge assembly comprising aretainer attached to a staple cartridge into the surgical staplingdevice;

FIG. 53 is a partial perspective view of a proximal end of the retainerof the cartridge assembly of FIG. 52;

FIG. 54 is a top view of the proximal end of the retainer of FIG. 53;

FIG. 55 is a side view of the proximal end of the retainer of FIG. 54;

FIG. 56 is a top view of another surgical stapling device wherein afirst lockout arm is supported in an opposite side of the surgicalstapling device and during an initial insertion of the cartridgeassembly of FIG. 52 therein;

FIG. 57 is an exploded perspective assembly view of a surgical staplingdevice and staple cartridge of another surgical stapling assembly;

FIG. 58 is a perspective view of a first lockout spring of the surgicalstapling device of FIG. 57;

FIG. 59 is a partial side elevational view of the surgical staplingdevice of FIG. 57 with a first lockout spring thereof in lockingengagement with a firing member of the surgical stapling device;

FIG. 60 is a top view of the surgical stapling device of FIG. 59 withthe first lockout spring in the engaged or locked position;

FIG. 61 is an exploded view of portions of the surgical stapling deviceof FIG. 60 showing an initial insertion of a cartridge assembly thatcomprises a retainer attached to a staple cartridge, wherein anauthentication key on the retainer is engaging the first lockout springof the surgical stapling device;

FIG. 62 is a top view of the surgical stapling device of FIG. 60illustrating an initial insertion of the cartridge assembly of FIG. 61therein;

FIG. 63 is another top view of the surgical stapling device of FIG. 62after the retainer has been removed from the staple cartridge seated inthe surgical stapling device;

FIG. 64 is an exploded view of a surgical system;

FIGS. 64A-64ZZ illustrate examples of various amounts of spaces that areavailable for authentication key arrangements of various staplecartridges as used in connection with different surgical staplingdevices;

FIG. 65 is an exploded perspective assembly view of a surgical staplingdevice and staple cartridge of another surgical stapling assembly;

FIG. 66 is a partial perspective view of portions of the surgicalstapling device of FIG. 65;

FIG. 67 is a perspective view of a proximal end portion of a first jawof the surgical stapling device of FIG. 65;

FIG. 68 is a top view of the surgical stapling device of FIG. 65 with afirst lockout arm thereof in a jaw locking position;

FIG. 69 is a side elevational view of the surgical stapling device ofFIG. 68 with the first lockout arm in the jaw locking position;

FIG. 70 is another side elevational view of the surgical stapling deviceof FIG. 69 with the first lockout arm in a jaw closure position and ananvil thereof in a closed position;

FIG. 71 is an end elevational view of a portion of the surgical staplingdevice with the first lockout arm thereof in the jaw locking position;

FIG. 72 is a perspective view of a staple cartridge that may be employedin connection with the surgical stapling device of FIG. 65;

FIG. 73 is a top view of a portion of the first lockout arm of thesurgical stapling device of FIG. 65 illustrating an initial insertion ofthe staple cartridge of FIG. 72 therein;

FIG. 74 is another top view of the first lockout arm in engagement withan upper ramp feature of an authentication key of the staple cartridge;

FIG. 75 is another top view of the first lockout arm of the surgicalstapling device of FIG. 65 during further insertion of the staplecartridge of FIG. 72 therein;

FIG. 76 is another top view of the first lockout arm of the surgicalstapling device of FIG. 65 in the jaw closure position after the staplecartridge has been operably seated in the surgical stapling device;

FIG. 77 is a partial perspective view of a portion of the first lockoutarm of FIG. 76 during closure of an anvil of the surgical staplingdevice of FIG. 65;

FIG. 78 is a partial top view of the surgical stapling device of FIG. 77with a portion of the anvil shown in cross-section;

FIG. 78A is a perspective view of another retainer embodiment attachedto another staple cartridge embodiment;

FIG. 78B is a perspective view of another staple cartridge embodiment;

FIG. 78C is a top view of the staple cartridge embodiment of FIG. 78B;

FIG. 79 is a perspective view of another retainer embodiment;

FIG. 80 is a bottom perspective view of the retainer embodiment of FIG.79;

FIG. 81 is another bottom perspective view of the retainer embodiment ofFIG. 79 with the frangible retention tabs removed therefrom;

FIG. 82 is a perspective assembly view of another retainer embodimentand a staple cartridge;

FIG. 83 is an exploded cross-sectional assembly view of the retainer andstaple cartridge of FIG. 82;

FIG. 84 is a cross-sectional end view of the retainer and staplecartridge of FIG. 82 coupled together to form a cartridge assembly thatis seated in a frame of a surgical stapling device;

FIG. 85 is a partial cross-sectional perspective view of the cartridgeassembly of FIG. 84 being seated in the frame of FIG. 84;

FIG. 86 is a partial perspective view of a nose portion of a staplecartridge;

FIG. 87 is a partial perspective view of a nose portion of anotherstaple cartridge;

FIG. 88 is a partial perspective view of a nose portion of anotherstaple cartridge;

FIG. 89 is a partial perspective view of a nose portion of anotherstaple cartridge;

FIG. 90 is a partial perspective view of a nose portion of anotherstaple cartridge;

FIG. 91 is a partial perspective view of a nose portion of anotherstaple cartridge;

FIG. 92 is a partial perspective view of a nose portion of anotherstaple cartridge;

FIG. 93 is a side view of a portion of a surgical stapling deviceshowing a compatible staple cartridge and compatible retainer seated ina frame of the surgical stapling device;

FIG. 94 is another side view of the surgical stapling device of FIG. 93with an incompatible staple cartridge and incompatible retainer seatedin the frame of the device;

FIG. 95 is a perspective view of another retainer embodiment with adetachable authentication key;

FIG. 96 is another perspective view of the retainer of FIG. 95 with thedetachable authentication key detached from a body portion of theretainer and tethered thereto;

FIG. 97 is a bottom view of another retainer embodiment;

FIG. 98 is a cross-sectional view of a portion of the retainer of FIG.97 prior to use;

FIG. 99 is another cross-sectional view of the portion of the retainerof FIG. 97 after the retainer has been used and removed from a staplecartridge;

FIG. 100 is a proximal perspective view of a retainer assemblyembodiment;

FIG. 101 is an exploded assembly view of the retainer assembly of FIG.100 and a staple cartridge;

FIG. 102 is another proximal perspective view of the retainer assemblyof FIG. 100;

FIG. 103 is a bottom view of the retainer assembly of FIG. 100;

FIG. 104 is a perspective view of the retainer assembly of FIG. 100mounted to a staple cartridge to form a cartridge assembly;

FIG. 105 is a perspective view of another retainer assembly embodimentmounted to a staple cartridge to form a cartridge assembly;

FIG. 106 is an exploded perspective assembly view of the cartridgeassembly of FIG. 105;

FIG. 107 is a partial perspective view of a portion of a surgicalstapling device supporting the cartridge assembly of FIG. 105 showingremoval of a retainer cover from the cartridge assembly;

FIG. 108 is a side view of a cartridge assembly seated in a frame of asurgical stapling device, wherein the cartridge assembly comprisesanother retainer removably coupled to a staple cartridge;

FIG. 109 is a bottom view of a proximal end of another retainerembodiment;

FIG. 110A is a top view of a proximal end of another retainer embodimentwith an authentication key thereof in a first position;

FIG. 110B in another top view of the retainer of FIG. 110A with theauthentication key in a second position making the retainer un-reusable;

FIG. 111 is a bottom view of a proximal end of another retainerembodiment;

FIG. 112 is a bottom view of proximal end of another retainerembodiment;

FIG. 113 is a cross-sectional view of an authentication key of theretainer of FIG. 112 taken along line 113-113 in FIG. 112;

FIG. 114 is a diagrammatic view of another retainer embodimentcomposition;

FIG. 115 is another view of the retainer embodiment of FIG. 114;

FIG. 116 is a diagrammatic view of the retainer embodiment of FIG. 114being clamped between jaws of a stapling device;

FIG. 117 is a top view of another retainer embodiment;

FIG. 118 is another top view of the retainer of FIG. 117 showing someportions in cross-section;

FIG. 119 is a partial perspective assembly view showing initialinstallation of the retainer of FIG. 117 onto a staple cartridge;

FIG. 120 is another partial perspective view showing the retainer ofFIG. 117 installed on the staple cartridge of FIG. 119;

FIG. 121 is a proximal end view of the retainer and staple cartridgeassembly of FIG. 120;

FIG. 122 is a side elevational view of another retainer embodimentinstalled on a staple cartridge with portion of the retainer shown incross-section and an authentication key thereof in a retracted position;

FIG. 123 is another side elevational view of the retainer and staplecartridge of FIG. 122 with the authentication key of the retainerprotruding proximally out of a key housing on the retainer;

FIG. 124 is an enlarged view of a portion of the retainer and staplecartridge of FIG. 123;

FIG. 125 is an enlarged cross-sectional view of portion of the retainerand staple cartridge of FIG. 124 with a plunger actuator in a depressedposition to detach the retainer from the staple cartridge;

FIG. 126 is an enlarged view of the plunger actuator of FIG. 125;

FIG. 127 is a perspective view of a proximal end of another retainerembodiment;

FIG. 128 is a perspective view showing the retainer of FIG. 127 coupledto an unfired staple cartridge;

FIG. 129 is an exploded assembly view of a portion of the retainer ofFIG. 128 in relation to a sled of the unfired staple cartridge of FIG.128;

FIG. 130 is a top view of another retainer embodiment with anauthentication key thereof in an extended actuated position, with someof the features of the retainer omitted for clarity;

FIG. 131 is a side view of the retainer of FIG. 130 with theauthentication key thereof in a retracted position;

FIG. 132 is an exploded assembly view of a retainer system;

FIG. 133 is a partial cross-sectional view of a retainer of the retainersystem of FIG. 132;

FIG. 134 is a cross-sectional assembly view of a retainer tool of theretainer system of FIG. 132 supported on a staple cartridge;

FIG. 135 is another exploded assembly view of retainer system of FIG.132 showing the retainer tool being used to initially install theretainer onto the staple cartridge;

FIG. 136 is another exploded assembly view showing the retainerinitially installed on the staple cartridge of FIG. 135, with theretainer tool being withdrawn from between the retainer and the staplecartridge;

FIG. 137 is an exploded assembly view of another retainer system;

FIG. 138 is a bottom perspective assembly view showing a tool of thesystem of FIG. 137 inserted into a retainer of the system of FIG. 137prior to installation on a staple cartridge;

FIG. 139 is a cross-sectional view of the tool of FIG. 138 inserted intothe retainer of FIG. 138 with the retainer seated on the staplecartridge;

FIG. 140 is a side elevational view of a portion of another retainerembodiment;

FIG. 141 is a bottom view of a portion of the retainer embodiment ofFIG. 140;

FIG. 142 is an exploded assembly view of another retainer embodiment anda surgical stapling device;

FIG. 143 is a perspective view showing the retainer of FIG. 142 attachedto a staple cartridge seated in a frame of the stapling device of FIG.143;

FIG. 144 is a side elevational view of the retainer and stapling deviceof FIG. 143 with a motion of a detachment member of the retainer shownin broken lines;

FIG. 145 is a partial side elevational view showing positions of anauthentication key of the retainer of FIG. 144 mounted in the staplingdevice of FIG. 144;

FIG. 146 is a partial top view of the retainer and stapling device ofFIG. 145 showing the initial insertion of the staple cartridge/retainerassembly into the stapling device;

FIG. 147 is another partial top view of the staple cartridge/retainerassembly of FIG. 146 seated in the stapling device of FIG. 146 and withan authentication key of the retainer defeating the lockout of thestapling device;

FIG. 148 is a side view of another retainer embodiment being used toapply a prying motion to a nose of a spent staple cartridge mounted in aframe of a surgical stapling device;

FIG. 149 is a perspective view of a deactivator tool embodiment;

FIG. 150 is a side elevational view of a surgical stapling device withthe deactivator tool of FIG. 149 installed thereon;

FIG. 151 is a partial top view of an authentication key of thedeactivator tool initially contacting an actuator cam arm of a lockoutof the surgical stapling device of FIG. 150;

FIG. 152 is a partial side elevational view of the authentication keyand actuator cam arm of FIG. 151;

FIG. 153 is another side elevational view of the surgical staplingdevice of FIG. 150 with the deactivator tool biasing the lockout arm ofthe surgical stapling device into a jaw closure position;

FIG. 154 is another side elevational view of the surgical staplingdevice of FIG. 153 with the deactivator tool biasing the lockout arm ofthe surgical stapling device into a jaw closure position and with astaple cartridge installed in the frame of the surgical stapling device;

FIG. 155 is a partial top view of the authentication key of thedeactivator tool biasing the actuator cam arm of the surgical staplingdevice of FIG. 153 into the jaw closure position;

FIG. 156 is a partial side elevational view of the authentication keyand actuator cam arm of FIG. 155;

FIG. 157 is a partial perspective view of portions of a surgicalstapling device with a deactivator insert embodiment retaining a firstlockout arm of the surgical stapling device in a jaw closure position;

FIG. 158 is a partial cross-sectional top view of an installation toolembodiment supporting the deactivator insert of FIG. 157 thereon priorto installation in the surgical stapling device of FIG. 157;

FIG. 159 is another partial cross-sectional top view of the installationtool of FIG. 158 installing the deactivator insert of FIG. 157 into thesurgical stapling device of FIG. 158;

FIG. 160 is another partial cross-sectional top view he surgicalstapling device of FIG. 159 after the deactivator insert has beeninstalled therein and the installation tool being withdrawn therefrom;

FIG. 161 is a partial perspective view of portions of another surgicalstapling device with another deactivator insert installed therein toretain a first lockout of the surgical stapling device in a jaw closureposition;

FIG. 162 is a perspective view of another installation tool embodiment;

FIG. 163 is a side elevational view of a surgical stapling deviceillustrating use of the installation tool of FIG. 162 to bias a firstlockout arm of the device into a jaw closure position;

FIG. 164 is a top view of another installation tool embodiment forinstalling deactivator inserts into a channel of a surgical staplingdevice;

FIG. 165 is a side elevational view of the surgical stapling device ofFIG. 163 illustrating use of a deactivator embodiment to retain alockout arm of the surgical stapling device in a jaw closure position;

FIG. 166 is another side elevational view of the surgical staplingdevice of FIG. 163 illustrating use of another deactivator embodiment toretain a lockout arm of the surgical stapling device in a jaw closureposition;

FIG. 167 is a partial top view of a portion of a surgical staplingdevice with a deactivator tool embodiment attached thereto to retain alockout arm of the surgical stapling device in a jaw closure position orlockout position until a staple cartridge is inserted into a frame ofthe device;

FIG. 168 is a partial perspective view of a frame of various surgicalstapling devices with a channel ledge formed thereon for cartridgealignment purposes;

FIG. 169 is a partial perspective view of a portion of an anvil ofvarious surgical stapling devices showing a relief area therein foraccommodating the channel ledges of FIG. 168 when the anvil is moved toa closed position;

FIG. 170 is a top cross-sectional view of a portion of a surgicalstapling device with a portion of a staple cartridge being initiallylongitudinally seated therein;

FIG. 171 is another top cross-sectional view of the surgical staplingdevice and cartridge of FIG. 170, with the staple cartridge operablyseated in the surgical stapling device;

FIG. 172 is a partial perspective view of the staple cartridge of FIG.171 and a first lockout arm of the surgical stapling device of FIG. 171;

FIG. 173 is a perspective view of a sled embodiment that comprises anauthentication key arrangement;

FIG. 174 is a partial top view of a staple cartridge housing the sled ofFIG. 173 therein in an unfired position and interacting with a firstlockout arm of a surgical stapling device;

FIG. 175 is a perspective view of a proximal end of another staplecartridge wherein an authentication key is formed into a cartridge panof the cartridge;

FIG. 176 is another perspective view of the proximal end of the staplecartridge of FIG. 175;

FIG. 177 is a top view of a portion of the staple cartridge of FIG. 175inserted into a portion of another surgical stapling device;

FIG. 178 is another top view of the staple cartridge of FIG. 175 fullyinserted into the surgical stapling device of FIG. 177 with a firstlockout thereof in an unlocked or jaw closure position;

FIG. 179 is a perspective view of a proximal end of another staplecartridge embodiment with an authentication key thereof in a firststate;

FIG. 180 is another perspective view of the proximal end of the staplecartridge of FIG. 179 with the authentication key in a second state;

FIG. 181 is a partial top cross-sectional view of the staple cartridgeof FIG. 179 during an initial insertion thereof into a surgical staplingdevice;

FIG. 182 is another partial top cross-sectional view of the staplecartridge and surgical stapling device of FIG. 181 with the staplecartridge operably seated in the device and a lockout arm of the devicein an unlocked position;

FIG. 183 is a perspective view of a proximal end of another staplecartridge embodiment with an authentication key formed into a cartridgepan and in a first state;

FIG. 184 is another perspective view of the proximal end of the staplecartridge of FIG. 183 with the authentication key in a second state;

FIG. 185 is a perspective view of a proximal end of another staplecartridge embodiment with an authentication key formed into a cartridgepan and in a first state;

FIG. 186 is a perspective view of another retainer embodiment with amovable authentication key arrangement attached to a staple cartridge;

FIG. 187 is a perspective view of another retainer embodiment with amovable authentication key arrangement attached to a staple cartridge;

FIG. 188 is a perspective view of another retainer embodiment with amovable authentication key arrangement attached to a staple cartridge;

FIG. 189 is a perspective view of another retainer embodiment with amovable authentication key arrangement attached to a staple cartridge;

FIG. 190 is a perspective view of another retainer embodiment with amovable authentication key arrangement attached to a staple cartridge;

FIG. 191 is a perspective view of another retainer embodiment attachedto a staple cartridge with a movable authentication key arrangementformed in a cartridge pan of the staple cartridge;

FIG. 192 is a perspective view of another retainer embodiment with acrushable authentication key arrangement attached thereto attached to astaple cartridge;

FIG. 193 is a partial perspective view of a portion of a surgicalstapling device with a cartridge assembly seated therein that comprisesa retainer with a movable authentication key that is movable whencontacted by a portion of the surgical stapling device;

FIG. 194 is a partial top view of the surgical stapling device of FIG.193 with the cartridge assembly of FIG. 193 initially inserted into thestapling device;

FIG. 195 is another partial top view of the surgical stapling device ofFIG. 194 with the cartridge assembly seated in a final position whereinthe movable authentication key thereof has moved a first lockout arm ofthe surgical stapling device into an unlocked position;

FIG. 195A is another partial top view of the surgical stapling device ofFIG. 194 with a cartridge assembly that comprises an alternativeretainer seated on the staple cartridge that is seated in a finalposition, wherein the movable authentication key thereof has moved afirst lockout arm of the device into an unlocked position;

FIG. 196 is a partial perspective view of a portion of a surgicalstapling device with another cartridge assembly seated therein thatcomprises another retainer with a movable authentication key that ismovable when contacted by a portion of the surgical stapling device;

FIG. 197 is a partial top view of the surgical stapling device of FIG.196 with the cartridge assembly of FIG. 196 initially inserted into thestapling device;

FIG. 198 is another partial top view of the surgical stapling device ofFIG. 196 with the cartridge assembly seated in a final position whereinthe movable authentication key thereof has moved a first lockout arm ofthe device into an unlocked position;

FIG. 199 is a partial perspective view of a portion of a surgicalstapling device with another cartridge assembly seated therein thatcomprises another retainer with a movable authentication key that ismovable when contacted by a portion of the surgical stapling device;

FIG. 200 is a partial top view of the surgical stapling device of FIG.199 with the cartridge assembly of FIG. 196 initially inserted into thesurgical stapling device;

FIG. 201 is another partial top view of the surgical stapling device ofFIG. 196 with the cartridge assembly seated in a final position whereinthe movable authentication key thereof has moved a first lockout arm ofthe surgical stapling device into an unlocked position;

FIG. 202 is a perspective view of a deactivator element embodiment;

FIG. 203 is a partial perspective view of the deactivator elementinstalled on a cartridge assembly comprising a staple cartridge and aretainer;

FIG. 204 is a perspective view of the cartridge assembly and deactivatorinstalled in a surgical stapling device;

FIG. 205 is another perspective view of the cartridge assembly andsurgical stapling device of FIG. 204 with the retainer being detachedfrom the staple cartridge while the deactivator element remains in thesurgical stapling device;

FIG. 206 is a bottom perspective view of a proximal end of a staplecartridge embodiment with an authentication key integrally formedthereon;

FIG. 207 is a bottom view of a sled embodiment of the staple cartridgeof FIG. 206;

FIG. 208 is a top perspective view of the proximal end of the staplecartridge of FIG. 206;

FIG. 209 is a partial top cross-sectional view of the staple cartridgeof FIG. 206 aligned with a surgical stapling device prior to insertiontherein; and

FIG. 210 is another partial top cross-sectional view of the staplecartridge and surgical stapling device of FIG. 209 with the staplecartridge operably seated in the device and a lockout arm of the devicein an unlocked position.

Corresponding reference characters indicate corresponding partsthroughout the several views. The exemplifications set out hereinillustrate various embodiments of the invention, in one form, and suchexemplifications are not to be construed as limiting the scope of theinvention in any manner.

DETAILED DESCRIPTION

Applicant of the present application owns the following U.S. PatentApplications that were filed on Jun. 26, 2019 and which are each hereinincorporated by reference in their respective entireties:

-   -   U.S. patent application Ser. No. 16/453,273, entitled METHOD FOR        PROVIDING AN AUTHENTICATION LOCKOUT IN A SURGICAL STAPLER WITH A        REPLACEABLE CARTRIDGE, now U.S. Patent Application Publication        No. 2020-0261080;    -   U.S. patent application Ser. No. 16/453,283, entitled SURGICAL        STAPLING ASSEMBLY WITH CARTRIDGE BASED RETAINER CONFIGURED TO        UNLOCK A FIRING LOCKOUT, now U.S. Patent Application Publication        No. 2020-0261081;    -   U.S. patent application Ser. No. 16/453,289, entitled SURGICAL        STAPLING ASSEMBLY WITH CARTRIDGE BASED RETAINER CONFIGURED TO        UNLOCK A CLOSURE LOCKOUT, now U.S. Patent Application        Publication No. 2020-0261082;    -   U.S. patent application Ser. No. 16/453,302, entitled UNIVERSAL        CARTRIDGE BASED KEY FEATURE THAT UNLOCKS MULTIPLE LOCKOUT        ARRANGEMENTS IN DIFFERENT SURGICAL STAPLERS, now U.S. Patent        Application Publication No. 2020-0261075    -   U.S. patent application Ser. No. 16/453,310, entitled STAPLE        CARTRIDGE RETAINERS WITH FRANGIBLE RETENTION FEATURES AND        METHODS OF USING SAME, now U.S. Patent Application Publication        No. 2020-0261083;    -   U.S. patent application Ser. No. 16/453,330, entitled STAPLE        CARTRIDGE RETAINER WITH FRANGIBLE AUTHENTICATION KEY, now U.S.        Patent Application Publication No. 2020-0261084;    -   U.S. patent application Ser. No. 16/453,335, entitled STAPLE        CARTRIDGE RETAINER WITH RETRACTABLE AUTHENTICATION KEY, now U.S.        Patent Application Publication No. 2020-0261078;    -   U.S. patent application Ser. No. 16/453,343, entitled STAPLE        CARTRIDGE RETAINER SYSTEM WITH AUTHENTICATION KEYS, now U.S.        Patent Application Publication No. 2020-0261085;    -   U.S. patent application Ser. No. 16/453,355, entitled INSERTABLE        DEACTIVATOR ELEMENT FOR SURGICAL STAPLER LOCKOUTS, now U.S.        Patent Application Publication No. 2020-0261086;    -   U.S. patent application Ser. No. 16/453,391, entitled STAPLE        CARTRIDGES WITH CAM SURFACES CONFIGURED TO ENGAGE PRIMARY AND        SECONDARY PORTIONS OF A LOCKOUT OF A SURGICAL STAPLING DEVICE,        now U.S. Patent Application Publication No. 2020-0261077;    -   U.S. patent application Ser. No. 16/453,413, entitled SURGICAL        STAPLE CARTRIDGES WITH MOVABLE AUTHENTICATION KEY ARRANGEMENTS,        now U.S. Patent Application Publication No. 2020-0261087;    -   U.S. patent application Ser. No. 16/453,423, entitled        DEACTIVATOR ELEMENT FOR DEFEATING SURGICAL STAPLING DEVICE        LOCKOUTS, now U.S. Patent Application Publication No.        2020-0261088; and    -   U.S. patent application Ser. No. 16/453,429, entitled SURGICAL        STAPLE CARTRIDGES WITH INTEGRAL AUTHENTICATION KEYS, now U.S.        Patent Application Publication No. 2020-0261089

Applicant of the present application owns the following U.S. DesignPatent Applications that were filed on Jun. 25, 2019 which are eachherein incorporated by reference in their respective entireties:

-   -   U.S. Design patent application Ser. No. 29/696,066, entitled        SURGICAL STAPLE CARTRIDGE RETAINER WITH FIRING SYSTEM        AUTHENTICATION KEY;    -   U.S. Design patent application Ser. No. 29/696,067, entitled        SURGICAL STAPLE CARTRIDGE RETAINER WITH CLOSURE SYSTEM        AUTHENTICATION KEY; and    -   U.S. Design patent application Ser. No. 29/696,072, entitled        SURGICAL STAPLE CARTRIDGE.

Applicant of the present application owns the following U.S. PatentApplications that were filed on Feb. 21, 2019 which are each hereinincorporated by reference in their respective entireties:

-   -   U.S. patent application Ser. No. 16/281,658, entitled METHODS        FOR CONTROLLING A POWERED SURGICAL STAPLER THAT HAS SEPARATE        ROTARY CLOSURE AND FIRING SYSTEMS;    -   U.S. patent application Ser. No. 16/281,670, entitled STAPLE        CARTRIDGE COMPRISING A LOCKOUT KEY CONFIGURED TO LIFT A FIRING        MEMBER;    -   U.S. patent application Ser. No. 16/281,675, entitled SURGICAL        STAPLERS WITH ARRANGEMENTS FOR MAINTAINING A FIRING MEMBER        THEREOF IN A LOCKED CONFIGURATION UNLESS A COMPATIBLE CARTRIDGE        HAS BEEN INSTALLED THEREIN;    -   U.S. patent application Ser. No. 16/281,685, entitled SURGICAL        INSTRUMENT COMPRISING CO-OPERATING LOCKOUT FEATURES;    -   U.S. patent application Ser. No. 16/281,693, entitled SURGICAL        STAPLING ASSEMBLY COMPRISING A LOCKOUT AND AN EXTERIOR ACCESS        ORIFICE TO PERMIT ARTIFICIAL UNLOCKING OF THE LOCKOUT;    -   U.S. patent application Ser. No. 16/281,704, entitled SURGICAL        STAPLING DEVICES WITH FEATURES FOR BLOCKING ADVANCEMENT OF A        CAMMING ASSEMBLY OF AN INCOMPATIBLE CARTRIDGE INSTALLED THEREIN;    -   U.S. patent application Ser. No. 16/281,707, entitled SURGICAL        INSTRUMENT COMPRISING A DEACTIVATABLE LOCKOUT,    -   U.S. patent application Ser. No. 16/281,741, entitled SURGICAL        INSTRUMENT COMPRISING A JAW CLOSURE LOCKOUT;    -   U.S. patent application Ser. No. 16/281,762, entitled SURGICAL        STAPLING DEVICES WITH CARTRIDGE COMPATIBLE CLOSURE AND FIRING        LOCKOUT ARRANGEMENTS;    -   U.S. patent application Ser. No. 16/281,660, entitled SURGICAL        STAPLE CARTRIDGE WITH FIRING MEMBER DRIVEN CAMMING ASSEMBLY THAT        HAS AN ONBOARD TISSUE CUTTING FEATURE;    -   U.S. patent application Ser. No. 16/281,666, entitled SURGICAL        STAPLING DEVICES WITH IMPROVED ROTARY DRIVEN CLOSURE SYSTEMS;    -   U.S. patent application Ser. No. 16/281,660, entitled SURGICAL        STAPLING DEVICES WITH ASYMMETRIC CLOSURE FEATURES;    -   U.S. patent application Ser. No. 16/281,678, entitled ROTARY        DRIVEN FIRING MEMBERS WITH DIFFERENT ANVIL AND FRAME ENGAGEMENT        FEATURES; and    -   U.S. patent application Ser. No. 16/281,682, entitled SURGICAL        STAPLING DEVICE WITH SEPARATE ROTARY DRIVEN CLOSURE AND FIRING        SYSTEMS AND FIRING MEMBER THAT ENGAGES BOTH JAWS WHILE FIRING.

Numerous specific details are set forth to provide a thoroughunderstanding of the overall structure, function, manufacture, and useof the embodiments as described in the specification and illustrated inthe accompanying drawings. Well-known operations, components, andelements have not been described in detail so as not to obscure theembodiments described in the specification. The reader will understandthat the embodiments described and illustrated herein are non-limitingexamples, and thus it can be appreciated that the specific structuraland functional details disclosed herein may be representative andillustrative. Variations and changes thereto may be made withoutdeparting from the scope of the claims.

The terms “comprise” (and any form of comprise, such as “comprises” and“comprising”), “have” (and any form of have, such as “has” and“having”), “include” (and any form of include, such as “includes” and“including”) and “contain” (and any form of contain, such as “contains”and “containing”) are open-ended linking verbs. As a result, a surgicalsystem, device, or apparatus that “comprises,” “has,” “includes” or“contains” one or more elements possesses those one or more elements,but is not limited to possessing only those one or more elements.Likewise, an element of a system, device, or apparatus that “comprises,”“has,” “includes” or “contains” one or more features possesses those oneor more features, but is not limited to possessing only those one ormore features.

The terms “proximal” and “distal” are used herein with reference to aclinician manipulating the handle portion of the surgical instrument.The term “proximal” refers to the portion closest to the clinician andthe term “distal” refers to the portion located away from the clinician.It will be further appreciated that, for convenience and clarity,spatial terms such as “vertical”, “horizontal”, “up”, and “down” may beused herein with respect to the drawings. However, surgical instrumentsare used in many orientations and positions, and these terms are notintended to be limiting and/or absolute.

Various exemplary devices and methods are provided for performinglaparoscopic and minimally invasive surgical procedures. However, thereader will readily appreciate that the various methods and devicesdisclosed herein can be used in numerous surgical procedures andapplications including, for example, in connection with open surgicalprocedures. As the present Detailed Description proceeds, the readerwill further appreciate that the various instruments disclosed hereincan be inserted into a body in any way, such as through a naturalorifice, through an incision or puncture hole formed in tissue, etc. Theworking portions or end effector portions of the instruments can beinserted directly into a patient's body or can be inserted through anaccess device that has a working frame through which the end effectorand elongate shaft of a surgical instrument can be advanced.

A surgical stapling system can comprise a shaft and an end effectorextending from the shaft. The end effector comprises a first jaw and asecond jaw. The first jaw comprises a staple cartridge. The staplecartridge is insertable into and removable from the first jaw; however,other embodiments are envisioned in which a staple cartridge is notremovable from, or at least readily replaceable from, the first jaw. Thesecond jaw comprises an anvil configured to deform staples ejected fromthe staple cartridge. The second jaw is pivotable relative to the firstjaw about a closure axis; however, other embodiments are envisioned inwhich the first jaw is pivotable relative to the second jaw. Thesurgical stapling system further comprises an articulation jointconfigured to permit the end effector to be rotated, or articulated,relative to the shaft. The end effector is rotatable about anarticulation axis extending through the articulation joint. Otherembodiments are envisioned which do not include an articulation joint.

The staple cartridge comprises a cartridge body. The cartridge bodyincludes a proximal end, a distal end, and a deck extending between theproximal end and the distal end. In use, the staple cartridge ispositioned on a first side of the tissue to be stapled and the anvil ispositioned on a second side of the tissue. The anvil is moved toward thestaple cartridge to compress and clamp the tissue against the deck.Thereafter, staples removably stored in the cartridge body can bedeployed into the tissue. The cartridge body includes staple cavitiesdefined therein wherein staples are removably stored in the staplecavities. The staple cavities are arranged in six longitudinal rows.Three rows of staple cavities are positioned on a first side of alongitudinal slot and three rows of staple cavities are positioned on asecond side of the longitudinal slot. Other arrangements of staplecavities and staples may be possible.

The staples are supported by staple drivers in the cartridge body. Thedrivers are movable between a first, or unfired position, and a second,or fired, position to eject the staples from the staple cavities. Thedrivers are retained in the cartridge body by a retainer which extendsaround the bottom of the cartridge body and includes resilient membersconfigured to grip the cartridge body and hold the retainer to thecartridge body. The drivers are movable between their unfired positionsand their fired positions by a sled. The sled is movable between aproximal position adjacent the proximal end and a distal positionadjacent the distal end. The sled comprises a plurality of rampedsurfaces configured to slide under the drivers and lift the drivers, andthe staples supported thereon, toward the anvil.

Further to the above, the sled is moved distally by a firing member. Thefiring member is configured to contact the sled and push the sled towardthe distal end. The longitudinal slot defined in the cartridge body isconfigured to receive the firing member. The anvil also includes a slotconfigured to receive the firing member. The firing member furthercomprises a first cam which engages the first jaw and a second cam whichengages the second jaw. As the firing member is advanced distally, thefirst cam and the second cam can control the distance, or tissue gap,between the deck of the staple cartridge and the anvil. The firingmember also comprises a knife configured to incise the tissue capturedintermediate the staple cartridge and the anvil. It is desirable for theknife to be positioned at least partially proximal to the rampedsurfaces such that the staples are ejected ahead of the knife.

FIG. 1 illustrates the surgical instrument 1010 that includes aninterchangeable shaft assembly 1200 operably coupled to a housing 1012.FIG. 2 illustrates the interchangeable shaft assembly 1200 detached fromthe housing 1012 or handle 1014. As can be seen in FIG. 3, the handle1014 may comprise a pair of interconnectable handle housing segments1016 and 1018 that may be interconnected by screws, snap features,adhesive, etc. In the illustrated arrangement, the handle housingsegments 1016, 1018 cooperate to form a pistol grip portion 1019. FIGS.1 and 3 depict a motor-driven surgical cutting and fastening instrument1010 that may or may not be reused. In the illustrated embodiment, theinstrument 1010 includes a previous housing 1012 that comprises a handle1014 that is configured to be grasped, manipulated and actuated by theclinician. The housing 1012 is configured for operable attachment to aninterchangeable shaft assembly 1200 that has a surgical end effector1300 operably coupled thereto that is configured to perform one or moresurgical tasks or procedures. As the present Detailed Descriptionproceeds, it will be understood that the various forms ofinterchangeable shaft assemblies disclosed herein may also beeffectively employed in connection with robotically-controlled surgicalsystems. Thus, the term “housing” may also encompass a housing orsimilar portion of a robotic system that houses or otherwise operablysupports at least one drive system that is configured to generate andapply at least one control motion which could be used to actuate theinterchangeable shaft assemblies disclosed herein and their respectiveequivalents. In addition, various components may be “housed” orcontained in the housing or various components may be “associated with”a housing. In such instances, the components may not be contained withinthe housing or supported directly by the housing. The term “frame” mayrefer to a portion of a handheld surgical instrument. The term “frame”may also represent a portion of a robotically controlled surgicalinstrument and/or a portion of the robotic system that may be used tooperably control a surgical instrument. For example, the interchangeableshaft assemblies disclosed herein may be employed with various roboticsystems, instruments, components and methods disclosed in U.S. Pat. No.9,072,535, entitled SURGICAL STAPLING INSTRUMENTS WITH ROTATABLE STAPLEDEPLOYMENT ARRANGEMENTS, that is incorporated by reference herein in itsentirety.

The previous housing 1012 depicted in FIG. 1 is shown in connection withan interchangeable shaft assembly 1200 (FIGS. 2, 4 and 5) that includesan end effector 1300 that comprises a surgical cutting and fasteningdevice that is configured to operably support a surgical staplecartridge 1350 therein. The housing 1012 may be configured for use inconnection with interchangeable shaft assemblies that include endeffectors that are adapted to support different sizes and types ofstaple cartridges, have different shaft lengths, sizes, and types, etc.In addition, the housing 1012 may also be effectively employed with avariety of other interchangeable shaft assemblies including thoseassemblies that are configured to apply other motions and forms ofenergy such as, for example, radio frequency (RF) energy, ultrasonicenergy and/or motion to end effector arrangements adapted for use inconnection with various surgical applications and procedures.Furthermore, the end effectors, shaft assemblies, handles, surgicalinstruments, and/or surgical instrument systems can utilize any suitablefastener, that can be gripped and manipulated by the clinician. As willbe discussed in further detail below, the handle 1014 operably supportsa plurality of drive systems therein that are configured to generate andapply various control motions to corresponding portions of theinterchangeable shaft assembly that is operably attached thereto.

Referring now to FIG. 3, the handle 1014 may further include a frame1020 that operably supports a plurality of drive systems. For example,the frame 1020 can operably support a “first” or closure drive system,generally designated as 1030, which may be employed to apply closing andopening motions to the interchangeable shaft assembly 1200 that isoperably attached or coupled thereto. In at least one form, the closuredrive system 1030 may include an actuator in the form of a closuretrigger 1032 that is pivotally supported by the frame 1020. Morespecifically, as illustrated in FIG. 3, the closure trigger 1032 ispivotally coupled to the handle 1014 by a pin 1033. Such arrangementenables the closure trigger 1032 to be manipulated by a clinician suchthat when the clinician grips the pistol grip portion 1019 of the handle1014, the closure trigger 1032 may be easily pivoted from a starting or“unactuated” position to an “actuated” position and more particularly toa fully compressed or fully actuated position. The closure trigger 1032may be biased into the unactuated position by spring or other biasingarrangement (not shown). In various forms, the closure drive system 1030further includes a closure linkage assembly 1034 that is pivotallycoupled to the closure trigger 1032. As can be seen in FIG. 3, theclosure linkage assembly 1034 may include a first closure link 1036 anda second closure link 1038 that are pivotally coupled to the closuretrigger 1032 by a pin 1035. The second closure link 1038 may also bereferred to herein as an “attachment member” and include a transverseattachment pin 1037.

Still referring to FIG. 3, it can be observed that the first closurelink 1036 may have a locking wall or end 1039 thereon that is configuredto cooperate with a closure release assembly 1060 that is pivotallycoupled to the frame 1020. In at least one form, the closure releaseassembly 1060 may comprise a release button assembly 1062 that has adistally protruding locking pawl 1064 formed thereon. The release buttonassembly 1062 may be pivoted in a counterclockwise direction by arelease spring (not shown). As the clinician depresses the closuretrigger 1032 from its unactuated position towards the pistol gripportion 1019 of the handle 1014, the first closure link 1036 pivotsupward to a point wherein the locking pawl 1064 drops into retainingengagement with the locking wall 1039 on the first closure link 1036thereby preventing the closure trigger 1032 from returning to theunactuated position. Thus, the closure release assembly 1060 serves tolock the closure trigger 1032 in the fully actuated position. When theclinician desires to unlock the closure trigger 1032 to permit it to bebiased to the unactuated position, the clinician simply pivots therelease button assembly 1062 such that the locking pawl 1064 is movedout of engagement with the locking wall 1039 on the first closure link1036. When the locking pawl 1064 has been moved out of engagement withthe first closure link 1036, the closure trigger 1032 may pivot back tothe unactuated position. Other closure trigger locking and releasearrangements may also be employed.

An arm 1061 may extend from the release button assembly 1062. A magneticelement 1063, such as a permanent magnet, for example, may be mounted tothe arm 1061. When the release button assembly 1062 is rotated from itsfirst position to its second position, the magnetic element 1063 canmove toward a circuit board 1100. The circuit board 1100 can include atleast one sensor that is configured to detect the movement of themagnetic element 1063. In at least one embodiment, for example, a “HallEffect” sensor (not shown) can be mounted to the bottom surface of thecircuit board 1100. The Hall Effect sensor can be configured to detectchanges in a magnetic field surrounding the Hall Effect sensor caused bythe movement of the magnetic element 1063. The Hall Effect sensor can bein signal communication with a microcontroller, for example, which candetermine whether the release button assembly 1062 is in its firstposition, which is associated with the unactuated position of theclosure trigger 1032 and the open configuration of the end effector, itssecond position, which is associated with the actuated position of theclosure trigger 1032 and the closed configuration of the end effector,and/or any position between the first position and the second position.

In at least one form, the handle 1014 and the frame 1020 may operablysupport another drive system referred to herein as a firing drive system1080 that is configured to apply firing motions to correspondingportions of the interchangeable shaft assembly attached thereto. Thefiring drive system 1080 may also be referred to herein as a “seconddrive system”. The firing drive system 1080 may employ an electric motor1082 that is located in the pistol grip portion 1019 of the handle 1014.In various forms, the motor 1082 may be a DC brushed driving motorhaving a maximum rotation of, approximately, 25,000 RPM, for example. Inother arrangements, the motor may include a brushless motor, a cordlessmotor, a synchronous motor, a stepper motor, or any other suitableelectric motor. The motor 1082 may be powered by a power source 1090that in one form may comprise a removable power pack 1092. As can beseen in FIG. 3, for example, the power pack 1092 may comprise a proximalhousing portion 1094 that is configured for attachment to a distalhousing portion 1096. The proximal housing portion 1094 and the distalhousing portion 1096 are configured to operably support a plurality ofbatteries 1098 therein. Batteries 1098 may each comprise, for example, aLithium Ion (“LI”) or other suitable battery. The distal housing portion1096 is configured for removable operable attachment to the circuitboard 1100 which is also operably coupled to the motor 1082. A number ofbatteries 1098 may be connected in series may be used as the powersource for the surgical instrument 1010. In addition, the power source1090 may be replaceable and/or rechargeable.

As outlined above with respect to other various forms, the electricmotor 1082 can include a rotatable shaft (not shown) that operablyinterfaces with a gear reducer assembly 1084 that is mounted in meshingengagement with a with a set, or rack, of drive teeth 1122 on alongitudinally-movable drive member 1120. In use, a voltage polarityprovided by the power source 1090 can operate the electric motor 1082 ina clockwise direction wherein the voltage polarity applied to theelectric motor by the battery can be reversed in order to operate theelectric motor 1082 in a counter-clockwise direction. When the electricmotor 1082 is rotated in one direction, the drive member 1120 will beaxially driven in the distal direction “DD”. When the motor 82 is drivenin the opposite rotary direction, the drive member 1120 will be axiallydriven in a proximal direction “PD”. The handle 1014 can include aswitch which can be configured to reverse the polarity applied to theelectric motor 1082 by the power source 1090. As with the other formsdescribed herein, the handle 1014 can also include a sensor that isconfigured to detect the position of the drive member 1120 and/or thedirection in which the drive member 1120 is being moved.

Actuation of the motor 1082 can be controlled by a firing trigger 1130that is pivotally supported on the handle 1014. The firing trigger 1130may be pivoted between an unactuated position and an actuated position.The firing trigger 1130 may be biased into the unactuated position by aspring 1132 or other biasing arrangement such that when the clinicianreleases the firing trigger 1130, it may be pivoted or otherwisereturned to the unactuated position by the spring 1132 or biasingarrangement. In at least one form, the firing trigger 1130 can bepositioned “outboard” of the closure trigger 1032 as was discussedabove. In at least one form, a firing trigger safety button 1134 may bepivotally mounted to the closure trigger 1032 by the pin 1035. Thesafety button 1134 may be positioned between the firing trigger 1130 andthe closure trigger 1032 and have a pivot arm 1136 protruding therefrom.See FIG. 3. When the closure trigger 1032 is in the unactuated position,the safety button 1134 is contained in the handle 1014 where theclinician cannot readily access it and move it between a safety positionpreventing actuation of the firing trigger 1130 and a firing positionwherein the firing trigger 1130 may be fired. As the clinician depressesthe closure trigger 1032, the safety button 1134 and the firing trigger1130 pivot down wherein they can then be manipulated by the clinician.

As indicated above, in at least one form, the longitudinally movabledrive member 1120 has a rack of teeth 1122 formed thereon for meshingengagement with a corresponding drive gear 1086 of the gear reducerassembly 1084. At least one form also includes a manually-actuatable“bailout” assembly 1140 that is configured to enable the clinician tomanually retract the longitudinally movable drive member 1120 should themotor 1082 become disabled. The bailout assembly 1140 may include alever or bailout handle assembly 1142 that is configured to be manuallypivoted into ratcheting engagement with the rack of teeth 1122 alsoprovided in the drive member 1120. Thus, the clinician can manuallyretract the drive member 1120 by using the bailout handle assembly 1142to ratchet the drive member 1120 in the proximal direction “PD”. U.S.Pat. No. 8,608,045, entitled POWERED SURGICAL CUTTING AND STAPLINGAPPARATUS WITH MANUALLY RETRACTABLE FIRING SYSTEM, discloses bailoutarrangements and other components, arrangements and systems that mayalso be employed with the various instruments disclosed herein. U.S.Pat. No. 8,608,045, is hereby incorporated by reference herein in itsentirety.

Turning now to FIGS. 2 and 5, the interchangeable shaft assembly 1200includes a surgical end effector 1300 that comprises an elongate frame1310 that is configured to operably support a staple cartridge 1350therein. The end effector 1300 may further include an anvil 2000 that ispivotally supported relative to the elongate frame 1310. Theinterchangeable shaft assembly 1200 may further include an articulationjoint 3020 and an articulation lock 2140 which can be configured toreleasably hold the end effector 1300 in a desired position relative toa shaft axis SA. Examples of various features of at least one form ofthe end effector 1300, the articulation joint 3020 and articulationlocks may be found in U.S. patent application Ser. No. 13/803,086, filedMar. 14, 2013, entitled ARTICULATABLE SURGICAL INSTRUMENT COMPRISING ANARTICULATION LOCK, now U.S. Patent Application Publication No.2014/0263541. The entire disclosure of U.S. patent application Ser. No.13/803,086, filed Mar. 14, 2013, entitled ARTICULATABLE SURGICALINSTRUMENT COMPRISING AN ARTICULATION LOCK, now U.S. Patent ApplicationPublication No. 2014/0263541, is hereby incorporated by referenceherein. As can be seen in FIG. 4, the interchangeable shaft assembly1200 can further include a proximal housing or nozzle 1201 comprised ofnozzle portions 1202 and 1203.

The interchangeable shaft assembly 1200 can further include a closuresystem or closure member assembly 3000 which can be utilized to closeand/or open the anvil 2000 of the end effector 1300. The shaft assembly1200 can include a spine 1210 that is configured to, one, slidablysupport a firing member therein and, two, slidably support the closuremember assembly 3000 which extends around the spine 1210. As can be seenin FIG. 5, a distal end 1212 of spine 1210 terminates in an upper lugmount feature 1270 and in a lower lug mount feature 1280. The upper lugmount feature 1270 is formed with a lug slot 1272 therein that isadapted to mountingly support an upper mounting link 1274 therein.Similarly, the lower lug mount feature 1280 is formed with a lug slot1282 therein that is adapted to mountingly support a lower mounting link1284 therein. The upper mounting link 1274 includes a pivot socket 1276therein that is adapted to rotatably receive therein a pivot pin 1292that is formed on a frame cap or anvil retainer 1290 that is attached toa proximal end portion 1312 of the elongate frame 1310. The lowermounting link 1284 includes lower pivot pin 1286 that adapted to bereceived within a pivot hole 1314 formed in the proximal end portion1312 of the elongate frame 1310. See FIG. 5. The lower pivot pin 1286 isvertically aligned with the pivot socket 1276 to define an articulationaxis AA about which the surgical end effector 1300 may articulaterelative to the shaft axis SA. See FIG. 2.

In the illustrated example, the surgical end effector 1300 isselectively articulatable about the articulation axis AA by anarticulation system 2100. In one form, the articulation system 2100includes proximal articulation driver 2102 that is pivotally coupled toan articulation link 2120. As can be most particularly seen in FIG. 5,an offset attachment lug 2114 is formed on a distal end 2110 of theproximal articulation driver 2102. A pivot hole 2116 is formed in theoffset attachment lug 2114 and is configured to pivotally receivetherein a proximal link pin 2124 formed on the proximal end 2122 of thearticulation link 2120. A distal end 2126 of the articulation link 2120includes a pivot hole 2128 that is configured to pivotally receivetherein a frame pin 1317 formed on the proximal end portion 1312 of theelongate frame 1310. Thus, axial movement of proximal articulationdriver 2102 will thereby apply articulation motions to the elongateframe 1310 to thereby cause the surgical end effector 1300 to articulateabout the articulation axis AA relative to the spine 1210. Furtherdetails concerning the construction and operation of the articulationsystem 2100 may be found in various references incorporated by referenceherein including U.S. patent application Ser. No. 15/635,631, filed Jun.28, 2017, entitled SURGICAL INSTRUMENT WITH AXIALLY MOVABLE CLOSUREMEMBER, now U.S. Patent Application Publication No. 2019/0000464, theentire disclosure of which is hereby incorporated by reference herein.In various circumstances, the proximal articulation driver 2102 can beheld in position by an articulation lock 2140 when the proximalarticulation driver 2102 is not being moved in the proximal or distaldirections. Additional details regarding an example of an articulationlock 2140 may be found in U.S. patent application Ser. No. 15/635,631,now U.S. Patent Application Publication No. 2019/0000464, as well as inother references incorporated by reference herein.

In various circumstances, the spine 1210 can comprise a proximal end1211 which is rotatably supported in a chassis 1240. In one arrangement,for example, the proximal end 1211 of the spine 1210 has a thread 1214formed thereon for threaded attachment to a spine bearing 1216configured to be supported within the chassis 1240. See FIG. 4. Such anarrangement facilitates rotatable attachment of the spine 1210 to thechassis 1240 such that the spine 1210 may be selectively rotated about ashaft axis SA relative to the chassis 1240.

Referring primarily to FIG. 4, the interchangeable shaft assembly 1200includes a closure shuttle 1250 that is slidably supported within thechassis 1240 such that it may be axially moved relative thereto. Theclosure shuttle 1250 includes a pair of proximally-protruding hooks 1252that are configured for attachment to the attachment pin 1037 (FIG. 3)that is attached to the second closure link 1038 as will be discussed infurther detail below. In at least one example, the closure memberassembly 3000 comprises a proximal closure member segment 3010 that hasa proximal end 3012 that is coupled to the closure shuttle 1250 forrelative rotation thereto. For example, a U shaped connector 1263 isinserted into an annular slot 3014 in the proximal end 3012 of theproximal closure member segment 3010 and is retained within verticalslots 1253 in the closure shuttle 1250. Such an arrangement serves toattach the proximal closure member segment 3010 to the closure shuttle1250 for axial travel therewith while enabling the proximal closuremember segment 3010 to rotate relative to the closure shuttle 1250 aboutthe shaft axis SA. A closure spring 1268 is journaled on the proximalclosure member segment 3010 and serves to bias the proximal closuremember segment 3010 in the proximal direction “PD” which can serve topivot the closure trigger 1032 into the unactuated position when theshaft assembly is operably coupled to the handle 1014.

In at least one form, the interchangeable shaft assembly 1200 mayfurther include an articulation joint 3020. Other interchangeable shaftassemblies, however, may not be capable of articulation. As can be seenin FIG. 5, for example, a distal closure member or distal closure tubesegment 3030 is coupled to the distal end of the proximal closure membersegment 3010. The articulation joint 3020 includes a double pivotclosure sleeve assembly 3022. According to various forms, the doublepivot closure sleeve assembly 3022 includes an end effector closure tube3050 having upper and lower proximally projecting tangs 3052, 3054. Anupper double pivot link 3056 includes upwardly projecting distal andproximal pivot pins that engage respectively an upper distal pin hole inthe upper proximally projecting tang 3052 and an upper proximal pin hole3032 in an upper distally projecting tang 3031 on the distal closuretube segment 3030. A lower double pivot link 3058 includes upwardlyprojecting distal and proximal pivot pins that engage respectively alower distal pin hole in the lower proximally projecting tang 3054 and alower proximal pin hole in the lower distally projecting tang 3034. SeeFIGS. 4 and 5. As will be discussed in further detail below, the closuremember assembly 3000 is translated distally (direction “DD”) to closethe anvil 2000, for example, in response to the actuation of the closuretrigger 1032. The anvil 2000 is opened by proximally translating theclosure member assembly 3000 which causes the end effector closure tube3050 to interact with the anvil 2000 and pivot it to an open position.

As was also indicated above, the interchangeable shaft assembly 1200further includes a firing member 1900 that is supported for axial travelwithin the spine 1210. The firing member 1900 includes an intermediatefiring shaft portion 1222 that is configured for attachment to a distalcutting portion or knife bar 1910. The intermediate firing shaft portion1222 may include a longitudinal slot 1223 in the distal end thereofwhich can be configured to receive a tab 1912 on the proximal end of thedistal knife bar 1910. The longitudinal slot 1223 and the proximal endtab 1912 can be sized and configured to permit relative movementtherebetween and can comprise a slip joint 1914. The slip joint 1914 canpermit the intermediate firing shaft portion 1222 of the firing member1900 to be moved to articulate the end effector 1300 without moving, orat least substantially moving, the knife bar 1910. Once the end effector1300 has been suitably oriented, the intermediate firing shaft portion1222 can be advanced distally until a proximal sidewall of thelongitudinal slot 1223 comes into contact with the tab 1912 in order toadvance the knife bar 1910 and fire the staple cartridge 1350 positionedwithin the frame 1310. The knife bar 1910 includes a knife portion 1920that includes a blade or tissue cutting edge 1922 and includes an upperanvil engagement tab 1924 and lower frame engagement tabs 1926. Variousfiring member configurations and operations are disclosed in variousother references incorporated herein by reference.

As can be seen in FIG. 4, the shaft assembly 1200 further includes aswitch drum 1500 that is rotatably received on proximal closure membersegment 3010. The switch drum 1500 comprises a hollow shaft segment 1502that has a shaft boss formed thereon for receive an outwardly protrudingactuation pin therein. In various circumstances, the actuation pinextends through a longitudinal slot provided in the lock sleeve tofacilitate axial movement of the lock sleeve when it is engaged with thearticulation driver. A rotary torsion spring 1420 is configured toengage the boss on the switch drum 1500 and a portion of the nozzle 1201to apply a biasing force to the switch drum 1500. The switch drum 1500can further comprise at least partially circumferential openings 1506defined therein which can be configured to receive circumferentialmounts extending from the nozzle portions 1202, 1203 and permit relativerotation, but not translation, between the switch drum 1500 and thenozzle 1201. The mounts also extend through openings 3011 in theproximal closure member segment 3010 to be seated in recesses 1219 inthe spine 1210. Rotation of the switch drum 1500 about the shaft axis SAwill ultimately result in the rotation of the actuation pin and the locksleeve between its engaged and disengaged positions. In one arrangement,the rotation of the switch drum 1500 may be linked to the axialadvancement of the closure tube or closure member. Thus, in essence,actuation of the closure system may operably engage and disengage thearticulation drive system with the firing drive system in the variousmanners described in further detail in U.S. patent application Ser. No.13/803,086, now U.S. Patent Application Publication No. 2014/0263541,entitled ARTICULATABLE SURGICAL INSTRUMENT COMPRISING AN ARTICULATIONLOCK and U.S. Pat. No. 9,913,642, entitled SURGICAL INSTRUMENTCOMPRISING A SENSOR SYSTEM, the entire disclosures of each being herebyincorporated by reference herein. For example, when the closure membersegment 3010 is in its proximal-most position corresponding to a “jawsopen” position, the closure member segment 3010 will have positioned theswitch drum 1500 so as to link the articulation system with the firingdrive system. When, the closure tube has been moved to its distalposition corresponding to a “jaws closed” position, the closure tube hasrotated the switch drum 1500 to a position wherein the articulationsystem is delinked from the firing drive system.

As also illustrated in FIG. 4, the shaft assembly 1200 can comprise aslip ring assembly 1600 which can be configured to conduct electricalpower to and/or from the end effector 1300 and/or communicate signals toand/or from the end effector 1300, for example. The slip ring assembly1600 can comprise a proximal connector flange 1604 that is mounted to achassis flange 1242 that extends from the chassis 1240 and a distalconnector flange that is positioned within a slot defined in the shafthousings. The proximal connector flange 1604 can comprise a first faceand the distal connector flange can comprise a second face which ispositioned adjacent to and movable relative to the first face. Thedistal connector flange can rotate relative to the proximal connectorflange 1604 about the shaft axis SA. The proximal connector flange 1604can comprise a plurality of concentric, or at least substantiallyconcentric, conductors defined in the first face thereof. A connectorcan be mounted on the proximal side of the connector flange and may havea plurality of contacts wherein each contact corresponds to and is inelectrical contact with one of the conductors. Such an arrangementpermits relative rotation between the proximal connector flange 1604 andthe distal connector flange while maintaining electrical contacttherebetween. The proximal connector flange 1604 can include anelectrical connector 1606 which can place the conductors in signalcommunication with a shaft circuit board 1610 mounted to the shaftchassis 1240, for example. In at least one instance, a wiring harnesscomprising a plurality of conductors can extend between the electricalconnector 1606 and the shaft circuit board 1610. The electricalconnector 1606 may extend proximally through a connector opening 1243defined in the chassis flange 1242. See FIG. 4. Further detailsregarding slip ring assembly 1600 may be found in U.S. patentapplication Ser. No. 13/803,086, entitled ARTICULATABLE SURGICALINSTRUMENT COMPRISING AN ARTICULATION LOCK, now U.S. Patent ApplicationPublication No. 2014/0263541, U.S. patent application Ser. No.13/800,067, entitled STAPLE CARTRIDGE TISSUE THICKNESS SENSOR SYSTEM,filed on Mar. 13, 2013, now U.S. Patent Application Publication No.2014/0263552, and U.S. Pat. No. 9,345,481, entitled STAPLE CARTRIDGETISSUE THICKNESS SENSOR SYSTEM, for example. U.S. patent applicationSer. No. 13/803,086, now U.S. Patent Application Publication No.2014/0263541, U.S. patent application Ser. No. 13/800,067, now U.S.Patent Application Publication No. 2014/0263552, and U.S. Pat. No.9,345,481 are each hereby incorporated by reference herein in theirrespective entireties.

As discussed above, the shaft assembly 1200 can include a proximalportion which is fixably mounted to the handle 1014 and a distal portionwhich is rotatable about a longitudinal axis. The rotatable distal shaftportion can be rotated relative to the proximal portion about the slipring assembly 1600, as discussed above. The distal connector flange ofthe slip ring assembly 1600 can be positioned within the rotatabledistal shaft portion. Moreover, further to the above, the switch drum1500 can also be positioned within the rotatable distal shaft portion.When the rotatable distal shaft portion is rotated, the distal connectorflange and the switch drum 1500 can be rotated synchronously with oneanother. In addition, the switch drum 1500 can be rotated between afirst position and a second position relative to the distal connectorflange. When the switch drum 1500 is in its first position, thearticulation drive system may be operably disengaged from the firingdrive system and, thus, the operation of the firing drive system may notarticulate the end effector 1300 of the shaft assembly 1200. When theswitch drum 1500 is in its second position, the articulation drivesystem may be operably engaged with the firing drive system and, thus,the operation of the firing drive system may articulate the end effector1300 of the shaft assembly 1200. When the switch drum 1500 is movedbetween its first position and its second position, the switch drum 1500is moved relative to distal connector flange. In various instances, theshaft assembly 1200 can comprise at least one sensor configured todetect the position of the switch drum 1500.

Referring again to FIG. 4, the chassis 1240 includes at least one, andpreferably two, tapered attachment portions 1244 formed thereon that areadapted to be received within corresponding dovetail slots 1702 formedwithin a distal attachment flange portion 1700 of the frame 1020. SeeFIG. 3. Each dovetail slot 1702 may be tapered or, stated another way,be somewhat V-shaped to seatingly receive the attachment portions 1244therein. As can be further seen in FIG. 4, a shaft attachment lug 1226is formed on the proximal end of the intermediate firing shaft portion1222. As will be discussed in further detail below, when theinterchangeable shaft assembly 1200 is coupled to the handle 1014, theshaft attachment lug 1226 is received in a firing shaft attachmentcradle 1126 formed in a distal end 1125 of the longitudinal drive member1120. See FIG. 3.

Various shaft assembly embodiments employ a latch system 1710 forremovably coupling the shaft assembly 1200 to the housing 1012 and morespecifically to the frame 1020. As can be seen in FIG. 4, for example,in at least one form, the latch system 1710 includes a lock member orlock yoke 1712 that is movably coupled to the chassis 1240. In theillustrated embodiment, for example, the lock yoke 1712 has a U-shapewith two spaced downwardly extending legs 1714. The legs 1714 each havea pivot lug 1715 formed thereon that are adapted to be received incorresponding holes 1245 formed in the chassis 1240. Such arrangementfacilitates pivotal attachment of the lock yoke 1712 to the chassis1240. The lock yoke 1712 may include two proximally protruding lock lugs1716 that are configured for releasable engagement with correspondinglock detents or grooves 1704 in the distal attachment flange portion1700 of the frame 1020. See FIG. 3. In various forms, the lock yoke 1712is biased in the proximal direction by spring or biasing member (notshown). Actuation of the lock yoke 1712 may be accomplished by a latchbutton 1722 that is slidably mounted on a latch actuator assembly 1720that is mounted to the chassis 1240. The latch button 1722 may be biasedin a proximal direction relative to the lock yoke 1712. As will bediscussed in further detail below, the lock yoke 1712 may be moved to anunlocked position by biasing the latch button in the distal directionwhich also causes the lock yoke 1712 to pivot out of retainingengagement with the distal attachment flange portion 1700 of the frame1020. When the lock yoke 1712 is in “retaining engagement” with thedistal attachment flange portion 1700 of the frame 1020, the lock lugs1716 are retainingly seated within the corresponding lock detents orgrooves 1704 in the distal attachment flange portion 1700.

When employing an interchangeable shaft assembly that includes an endeffector of the type described herein that is adapted to cut and fastentissue, as well as other types of end effectors, it may be desirable toprevent inadvertent detachment of the interchangeable shaft assemblyfrom the housing during actuation of the end effector. For example, inuse the clinician may actuate the closure trigger 1032 to grasp andmanipulate the target tissue into a desired position. Once the targettissue is positioned within the end effector 1300 in a desiredorientation, the clinician may then fully actuate the closure trigger1032 to close the anvil 2000 and clamp the target tissue in position forcutting and stapling. In that instance, the first drive system 1030 hasbeen fully actuated. After the target tissue has been clamped in the endeffector 1300, it may be desirable to prevent the inadvertent detachmentof the shaft assembly 1200 from the housing 1012. One form of the latchsystem 1710 is configured to prevent such inadvertent detachment.

As can be most particularly seen in FIG. 4, the lock yoke 1712 includesat least one and preferably two lock hooks 1718 that are adapted tocontact corresponding lock lug portions 1256 that are formed on theclosure shuttle 1250. When the closure shuttle 1250 is in an unactuatedposition (i.e., the first drive system 1030 is unactuated and the anvil2000 is open), the lock yoke 1712 may be pivoted in a distal directionto unlock the interchangeable shaft assembly 1200 from the housing 1012.When in that position, the lock hooks 1718 do not contact the lock lugportions 1256 on the closure shuttle 1250. However, when the closureshuttle 1250 is moved to an actuated position (i.e., the first drivesystem 1030 is actuated and the anvil 2000 is in the closed position),the lock yoke 1712 is prevented from being pivoted to an unlockedposition. Stated another way, if the clinician were to attempt to pivotthe lock yoke 1712 to an unlocked position or, for example, the lockyoke 1712 was inadvertently bumped or contacted in a manner that mightotherwise cause it to pivot distally, the lock hooks 1718 on the lockyoke 1712 will contact the lock lug portions 1256 on the closure shuttle1250 and prevent movement of the lock yoke 1712 to an unlocked position.

Attachment of the interchangeable shaft assembly 1200 to the handle 1014will now be described. To commence the coupling process, the clinicianmay position the chassis 1240 of the interchangeable shaft assembly 1200above or adjacent to the distal attachment flange portion 1700 of theframe 1020 such that the tapered attachment portions 1244 formed on thechassis 1240 are aligned with the dovetail slots 1702 in the frame 1020.The clinician may then move the shaft assembly 1200 along aninstallation axis that is perpendicular to the shaft axis SA to seat theattachment portions 1244 in “operable engagement” with the correspondingdovetail receiving slots 1702. In doing so, the shaft attachment lug1226 on the intermediate firing shaft portion 1222 will also be seatedin the cradle 1126 in the longitudinally movable drive member 1120 andthe portions of the pin 1037 on the second closure link 1038 will beseated in the corresponding hooks 1252 in the closure shuttle 1250. Asused herein, the term “operable engagement” in the context of twocomponents means that the two components are sufficiently engaged witheach other so that upon application of an actuation motion thereto, thecomponents may carry out their intended action, function and/orprocedure.

At least five systems of the interchangeable shaft assembly 1200 can beoperably coupled with at least five corresponding systems of the handle1014. A first system can comprise a frame system which couples and/oraligns the frame or spine of the shaft assembly 1200 with the frame 1020of the handle 1014. Another system can comprise a closure drive system1030 which can operably connect the closure trigger 1032 of the handle1014 and the closure tube 3050 and the anvil 2000 of the shaft assembly1200. As outlined above, the closure shuttle 1250 of the shaft assembly1200 can be engaged with the pin 1037 on the second closure link 1038.Another system can comprise the firing drive system 1080 which canoperably connect the firing trigger 1130 of the handle 1014 with theintermediate firing shaft portion 1222 of the shaft assembly 1200. Asoutlined above, the shaft attachment lug 1226 can be operably connectedwith the cradle 1126 of the longitudinal drive member 1120. Anothersystem can comprise an electrical system which can signal to acontroller in the handle 1014, such as microcontroller, for example,that a shaft assembly, such as shaft assembly 1200, for example, hasbeen operably engaged with the handle 1014 and/or, two, conduct powerand/or communication signals between the shaft assembly 1200 and thehandle 1014. For instance, the shaft assembly 1200 can include anelectrical connector 1810 that is operably mounted to the shaft circuitboard 1610. The electrical connector 1810 is configured for matingengagement with a corresponding electrical connector 1800 on the controlcircuit board 1100. Further details regaining the circuitry and controlsystems may be found in U.S. patent application Ser. No. 13/803,086, nowU.S. Patent Application Publication No. 2014/0263541, and U.S. patentapplication Ser. No. 14/226,142, now U.S. Pat. No. 9,913,642, the entiredisclosures of each which were previously incorporated by referenceherein. The fifth system may consist of the latching system forreleasably locking the shaft assembly 1200 to the handle 1014.

The anvil 2000 in the illustrated example includes an anvil body 2002that terminates in an anvil mounting portion 2010. The anvil mountingportion 2010 is movably or pivotably supported on the elongate frame1310 for selective pivotal travel relative thereto about a fixed anvilpivot axis PA that is transverse to the shaft axis SA. In theillustrated arrangement, a pivot member or anvil trunnion 2012 extendslaterally out of each lateral side of the anvil mounting portion 2010 tobe received in a corresponding trunnion cradle 1316 formed in theupstanding walls 1315 of the proximal end portion 1312 of the elongateframe 1310. The anvil trunnions 2012 are pivotally retained in theircorresponding trunnion cradle 1316 by the frame cap or anvil retainer1290. The frame cap or anvil retainer 1290 includes a pair of attachmentlugs that are configured to be retainingly received within correspondinglug grooves or notches formed in the upstanding walls 1315 of theproximal end portion 1312 of the elongate frame 1310. See FIG. 5.

Still referring to FIG. 5, in at least one arrangement, the distalclosure member or end effector closure tube 3050 employs two axiallyoffset, proximal and distal positive jaw opening features 3060 and 3062.The positive jaw opening features 3060, 3062 are configured to interactwith corresponding relieved areas and stepped portions formed on theanvil mounting portion 2010 as described in further detail in U.S.patent application Ser. No. 15/635,631, entitled SURGICAL INSTRUMENTWITH AXIALLY MOVABLE CLOSURE MEMBER, now U.S. Patent ApplicationPublication No. 2019/0000464, the entire disclosure which has beenherein incorporated by reference. Other jaw opening arrangements may beemployed.

The disclosures of U.S. Patent Application Publication No. 2004/0232200,entitled SURGICAL STAPLING INSTRUMENT HAVING A SPENT CARTRIDGE LOCKOUT,filed on May 20, 2003, U.S. Patent Application Publication No.2004/0232199, entitled SURGICAL STAPLING INSTRUMENT HAVING A FIRINGLOCKOUT FOR AN UNCLOSED ANVIL, U.S. Patent Application Publication No.2004/0232197, entitled SURGICAL STAPLING INSTRUMENT INCORPORATING ANE-BEAM FIRING MECHANISM, filed on May 20, 2003, U.S. Patent ApplicationPublication No. 2004/0232196, entitled SURGICAL STAPLING INSTRUMENTHAVING SEPARATE DISTINCT CLOSING AND FIRING SYSTEMS, filed on May 20,2003, U.S. Patent Application Publication No. 2004/0232195, entitledSURGICAL STAPLING INSTRUMENT HAVING A SINGLE LOCKOUT MECHANISM FORPREVENTION OF FIRING, filed on May 20, 3003, and U.S. Patent ApplicationPublication No. 2018/0085123, entitled ARTICULATING SURGICAL STAPLINGINSTRUMENT INCORPORATING A TWO-PIECE E-BEAM FIRING MECHANISM, filed onAug. 17, 2017 are incorporated by reference in their entireties.

Referring to FIG. 6, an example of a surgical stapling assembly 4000 isshown. The surgical stapling assembly 4000 may be employed in connectionwith the surgical instrument 1010 described above or in connection witha variety of other surgical instruments described in various disclosuresthat have been incorporated by reference herein. The surgical staplingassembly 4000 may be employed in connection with electricallycontrolled, battery powered, manually powered, and/orrobotically-controlled surgical instruments in the various formsdisclosed in the aforementioned incorporated disclosures, for example.As can be seen in FIG. 6, the surgical stapling assembly 4000 comprisesa surgical stapling device generally designated as 4002 that comprises afirst jaw, or frame 4010 that is configured to operably support a staplecartridge 4200 therein. The first jaw 4010 may be attached to a spine ofthe shaft assembly of a surgical instrument or robot in the variousmanners described herein as well as in the various disclosures whichhave been herein incorporated by reference. In the illustrated example,the first jaw 4010 is attached to the spine portion of the shaftassembly (not shown in FIG. 6), by a shaft mount flange 4030 that ispinned by a pin 4032 or otherwise attached to a proximal end 4014 of thefirst jaw 4010. In particular, pin 4032 is configured to pass throughaligned holes 4021 in upstanding sidewalls 4020 of the first jaw 4010 aswell as through hole 4031 in the shaft mount flange 4030. The shaftmount flange 4030 is configured to interface with an articulation jointarrangement (not shown) that is configured to facilitate articulation ofthe first jaw 4010 relative to the shaft assembly in various knownconfigurations. Other methods of attaching and operably interfacing thesurgical device 4002 with a shaft of a surgical instrument may also beemployed. For example, the stapling device 4002 may be attached to theshaft assembly such that the stapling device (sometimes also referred toas an “end effector”) is not capable of articulating relative to theshaft assembly.

Still referring to FIG. 6, the surgical stapling device 4002 furthercomprises a firing member assembly 4040 that comprises a knife bar 4042that is attached to a knife member or “firing member” 4050. The knifebar 4042 also interfaces with corresponding components and firingsystems in the surgical instrument to receive firing motions which candistally advance the knife bar 4042 and firing member 4050 through astaple firing stroke from a starting position to an ending position andalso retract the knife bar 4042 and firing member 4050 proximally to astarting position. In the illustrated arrangement, the firing member4050 comprises a firing member body 4052 that supports a cutting edge orknife edge 4053. The firing member 4050 further comprises a foot 4054that is formed on the bottom of the firing member body 4052 and extendslaterally from each side of the firing member body 4052. The firingmember 4050 further comprises a pair of top pins or tabs 4056 thatextend laterally from the firing member body 4052 that are adapted toengage ledges on an anvil as will be discussed further herein.Additionally, the firing member 4050 comprises a pair of central pins ortabs 4058 that protrude laterally from each side of the firing memberbody 4052. In some of the disclosures incorporated by reference herein,the firing member 4050 may also be referred to as an “E-Beam” firingmember or cutting member.

Further to the above, the surgical stapling device 4002 comprises asecond jaw or anvil 4100 that is movable relative to the first jaw orframe 4010. The anvil 4100 comprises an anvil body 4102 and an anvilmounting portion 4110. The anvil body 4102 comprises a staple formingundersurface or tissue contacting surface 4104 that has a series ofstaple forming pockets formed therein (not shown) that are arranged toform corresponding staples as they are driven into forming contacttherewith. The anvil mounting portion 4110 comprises a pair of laterallyextending anvil pins or trunnion pins 4112 that are configured to bereceived in corresponding trunnion slots 4022 in the upstandingsidewalls 4020 of the first jaw 4010. In the illustrated arrangement,the trunnion slots 4022 are somewhat “kidney-shaped” and facilitatepivotal as well as axial travel of the corresponding trunnion pins 4112therein. Such pivotal and axial movement of the anvil 4100 may bereferred to as “translation” of the anvil during an anvil closuresequence.

As discussed above, as well as in several of the disclosures which havebeen incorporated by reference herein, the anvil 4100 may be movablefrom an open position wherein a used or spent surgical staple cartridgemay either be removed from the first jaw or frame 4010 or an unfiredsurgical staple cartridge may be operably seated therein to a closedposition. The anvil 4100 may be movable between the open and closedpositions by an axially movable closure member which may comprise an endeffector closure tube (not shown) that is part of the shaft assembly ofthe surgical instrument to which the surgical device 4002 is operablyattached. For example, as the closure member is moved distally from aproximal position by actuating a closure control system in the surgicalinstrument, the closure member may operably engage a cam surface on theanvil mounting portion 4110. Such interaction between the closure memberand the anvil mounting portion 4110 causes the anvil mounting portion4110 and the anvil trunnion pins 4112 to pivot and translate up thetrunnion slots 4022 until the closure member moves the anvil 4100 to afully closed position. When in the fully closed position, thestaple-forming pockets in the anvil 4100 are properly aligned with thestaples in a corresponding compatible surgical staple cartridge that hasbeen operably seated in the first jaw or frame 4010. When the axiallymovable closure member is thereafter moved in a proximal direction, theclosure member interfaces with an upstanding tab 4114 on the anvilmounting portion 4110 to return the anvil 4100 to the open position.

One form of surgical staple cartridge 4200 that may be compatible withthe surgical stapling device 4002 that comprises a cartridge body 4202that defines a cartridge deck surface or tissue contacting surface 4204.The cartridge body 4202 further comprises a longitudinal slot 4206 thatbisects the cartridge deck surface 4204 and is configured to accommodateaxial passage of the firing member 4050 therein between its startingposition and an ending position within the cartridge body 4202 during astaple firing stroke. The longitudinal slot 4206 lies along a centeraxis CA of the cartridge 4200. The surgical staple cartridge 4200further comprises a series of staple pockets 4208 that are formed in thecartridge body 4202. The staple pockets 4208 may be formed in offset“lines” located on each side of the longitudinal slot 4206. Each staplepocket 4208 may have a staple driver (not shown) associated therewiththat supports a surgical staple or fastener (not shown) thereon. In atleast one example, the cartridge body 4202 is molded from a polymermaterial with the staple pockets 4208 molded or machined therein. In onearrangement, the staple pockets 4208 also open through a bottom of thecartridge body 4202 to facilitate installation of the drivers andfasteners into their respective staple pockets 4208. Once the driversand fasteners are inserted into their respective staple pockets 4208, acartridge pan 4220 is attached to the cartridge body 4202. In one form,the cartridge pan 4220 is fabricated from a metal material and includesa bottom 4222 that spans across the bottom of the cartridge body 4202.The cartridge pan 4220 also includes two upstanding sidewalls 4224 thatcorrespond to each side of the cartridge body 4202. The cartridge pan4220 may be removably affixed to the cartridge body 4202 by hooks 4226that are formed on the sidewalls 4224 and configured to hookingly engagecorresponding portions of the cartridge body 4202. In addition, thecartridge body 4202 may also have lugs or attachment formationsprotruding therefrom that are configured to retainingly engagecorresponding portions of the cartridge pan 4220. When installed, thecartridge pan 4220 may, among other things, prevent the drivers andfasteners from falling out of the bottom of the cartridge body 4202during handling and installation of the staple cartridge into the firstjaw or frame 4010.

Some of the staple drivers operably support a single surgical staplethereon and other staple drivers support more than one surgical staplethereon depending upon the particular cartridge design. Each surgicalstaple comprises a staple crown and two upstanding staple legs. Thestaple crown is typically supported on a cradle arrangement formed in acorresponding staple driver such that the legs are vertically orientedtoward the anvil when the cartridge is operably seated in the frame4010. In some arrangements, surgical staples have a somewhat V-shape,wherein the ends of the legs flare slightly outward. Such arrangementmay serve to retain the staple in its corresponding staple pocket due tofrictional engagement between the legs and the sides of the staplepocket should the cartridge be inadvertently inverted or turned upsidedown during use. Other surgical staples are roughly U-shaped (the endsof the legs do not flare outward) and may be more susceptible to fallingout of the staple pocket should the cartridge be inverted prior to use.

The surgical staple cartridge 4200 further comprises a sled or cammingmember 4230 that is configured to be axially advanced through thecartridge body 4202 during a staple firing stroke. In a “new”, “fresh”or “unfired” surgical staple cartridge, the sled 4230 is in itsproximal-most, “unfired” position. The sled 4230 comprises a pluralityof wedges or cam members 4232 that are configured to drivingly engagethe corresponding lines of staple drivers in the cartridge body. Duringthe staple firing stroke, the firing member 4050 abuts and pushes thesled 4230 distally into camming contact with the staple drivers therebysequentially driving the staple drivers upward toward the anvil 4100 asthe sled 4230 is driven from its unfired position to its distal-mostfully fired position within the cartridge body 4202. As the stapledrivers are driven upwardly, the staples are driven through the tissuethat is clamped between the deck surface 4204 of the staple cartridge4200 and the anvil 4100 and into forming contact with the staple-formingundersurface 4104 of the anvil 4100. The tissue-cutting knife 4053 onthe firing member 4050 cuts through the stapled tissue as the firingmember 4050 is driven distally. After the staple firing stroke has beencompleted, and/or after a sufficient length of the staple firing strokehas been completed, the firing member 4050 is retracted proximally.However, the sled 4230 is not retracted proximally with the firingmember 4050. Instead, the sled 4230 is left behind at the distal-mostposition in which it was pushed by the firing member 4050.

After a staple cartridge has been fired, or at least partially fired, itis removed from the frame and then replaced with another replaceablestaple cartridge, if desired. At such point, the stapling device can bere-used to continue stapling and incising the patient tissue. In someinstances, however, a previously-fired staple cartridge can beaccidentally loaded into the frame. If the firing member were to beadvanced distally within such a previously-fired staple cartridge, thestapling instrument would cut the patient tissue without stapling it.The stapling instrument would similarly cut the patient tissue withoutstapling it if the firing member were advanced distally through a staplefiring stroke without a staple cartridge positioned in the cartridge jawat all. In addition, various surgical staple cartridges may havedifferent arrays of and/or orientations of staples/fasteners therein.The sizes of the staples or fasteners, as well as the number offasteners may vary from cartridge type to cartridge type depending upona particular surgical procedure or application. To ensure that thestaples are properly crimped or formed, the surgical staple cartridgesmust be used in connection with corresponding, compatible anvils thathave the proper array of staple-forming pockets therein as well as theproper cutting and firing components. Should a “non-compatible”cartridge be loaded into a surgical stapling device that has an anvilthat is mismatched to the staple cartridge, the staples may not beproperly formed during the firing process which could lead tocatastrophic results. To this end, the surgical stapling assembly 4000comprises one or more lockouts which prevents this from happening, asdiscussed in greater detail below.

Further to the above, the surgical stapling device 4002 comprises afirst lockout 4300 that is configured to prevent the firing member 4050from moving distally from its proximal-most, starting position unless anauthorized or compatible staple cartridge is operably seated in thefirst jaw or frame 4010. The first lockout 4300 may also be referred toherein as an “authentication” lockout. In the illustrated arrangement,the first lockout 4300 comprises a single, bi-lateral first lockoutspring 4310 that is supported in the proximal end 4014 of the frame 4010and attached to the shaft mount flange 4030. In one arrangement forexample, the first lockout spring 4310 comprises a first lockout arm4312 that is located on one side of the cartridge axis CA and a secondlockout arm 4314 that is located on an opposite side of the cartridgeaxis CA. The first and second lockout arms 4312, 4314 are attached to acentral body portion 4316. See FIG. 7. The spring 4310 is supported inthe first jaw or frame 4010 and affixed to the shaft mount flange 4030by a pin 4034 that extends through holes 4036 in the shaft mount flange4030 and through holes 4318 in the first lockout arm 4312 and the secondlockout arm 4314. The first lockout arm 4312 and the second lockout arm4314 each further comprise a lockout window or opening 4320. The lockoutwindows 4320 are each adapted to receive therein a corresponding centralpin 4058 protruding from the adjacent first or second lateral side ofthe firing member 4050 when the firing member 4050 is in itsproximal-most or starting position. See FIGS. 8 and 9.

FIGS. 8-10 illustrate the first lockout 4300 in the locked positionwherein the central pins 4058 are received within the lockout windows4320 in the first and second lockout arms 4312, 4314. In somearrangements, those staple cartridges that are compatible with thesurgical stapling device 4002 or, stated another way, those staplecartridges that have the proper number, size, and arrangement ofstaples, may have one or more unlocking or “authorization” keys directlyformed on the cartridge body and/or on the cartridge pan that areconfigured to defeat the first lockout when the compatible staplecartridge is operably seated in the first jaw or frame. Various staplecartridges that have unlocking keys protruding therefrom are disclosedbelow as well as in various disclosures which have been hereinincorporated by reference. In certain instances, however, the clinicianmay wish to use staple cartridges that are compatible with the surgicalstapling device, but otherwise lack the unlocking keys. In suchinstances, the clinician would be unable to otherwise use thosecompatible staple cartridges in the surgical stapling device. Thesurgical stapling device 4002 includes features designed to facilitateuse of such compatible staple cartridges that otherwise lack unlockingkey features.

Turning now to FIGS. 6 and 10, the stapling assembly 4000 furthercomprises a retainer 4400 that is configured to be removably coupled tothe staple cartridge 4200 which is otherwise compatible with thesurgical stapling device 4002. In the illustrated arrangement, theretainer 4400 comprises a top portion 4402 that is coextensive with, andconfigured to be received on, the deck surface 4204 of the cartridgebody 4202. Thus, in at least one configuration, when the retainer 4400is attached to the cartridge body 4202, the retainer 4400 covers all ofthe staple pockets 4208 in the cartridge body 4202. As such, when theretainer 4400 is attached to the staple cartridge 4200, the retainer4400 may prevent the surgical staples stored within the staple pockets4208 from falling out should the staple cartridge 4200 be inverted orturned upside down prior to use. The retainer 4400 also protects thedeck surface from being contaminated during shipping and storage.

In one arrangement, the retainer 4400 may be molded from a polymermaterial and include a plurality of retainer lugs 4410 that areconfigured to latchingly engage outwardly extending deck ledge portions4205 that are formed on the cartridge body 4202. The retainer 4400 mayfurther comprise an angled nose portion 4420 and distal latch tab 4422that that is configured to latching engage a distal nose 4203 of thecartridge body 4202. The retainer 4400 may be removably coupled to thesurgical staple cartridge 4200 by engaging the distal latch tab 4422with an end of the distal nose 4203 and aligning the retainer 4400 suchthat the underside of the top portion 4402 confronts the cartridge decksurface 4204 and the retainer lugs 4410 are located above the deck ledgeportions 4205 on each side of the cartridge body 4202. Thereafter, theretainer 4400 may be pressed toward the staple cartridge 4200 causingthe retainer lugs 4410 to flex laterally outward and snap into latchingengagement with the corresponding deck ledge portions 4205. Otherretainer latching arrangements disclosed herein may also be employed toremovably affix the retainer 4400 to the staple cartridge 4200. Theretainer 4400 may be removed from the staple cartridge 4200 by applyinga prying motion to the distal latch tab 4422 until the retainer lugs4410 disengage the deck ledge portions 4205. In the illustrated example,the term “LIFT” is molded, embossed, imprinted or otherwise provided onthe nose portion 4420 to provide removal instructions to the user.

Referring now to FIGS. 10-13, the retainer 4400 further comprises anauthentication key 4430 that is configured to defeat, deactivate orunlatch the first lockout 4300 when the retainer 4400 is attached to thestaple cartridge 4200 to form a cartridge assembly 4500 and thecartridge assembly 4500 has been operably seated in the first jaw orframe 4010. As can be seen in FIG. 11, the authentication key 4430protrudes proximally from a proximal end 4401 of the top portion 4402 ofthe retainer 4400 and comprises a right ramp feature 4440 and a leftramp feature 4450 that are separated by a space 4460 that is sized toreceive the firing member body 4052 therebetween. In the illustratedexample, the right ramp feature 4440 angles downward from the topportion 4402 of the retainer 4400 and comprises a proximal right tip4442. The proximal right tip 4442 defines a first right cam surface 4444that angles inward at the tip and extends distally to a second right camsurface 4446. The second right cam surface 4446 extends from the firstright cam surface 4444 to the top portion 4402. See FIG. 12. Similarly,the left ramp feature 4450 angles downward from the top portion 4402 ofthe retainer 4400 and comprises a proximal left tip 4452. The proximalleft tip 4452 angles inward at the tip and extends distally to a secondleft cam surface 4456. The second left cam surface 4456 extends from thefirst left cam surface 4454 to the top portion 4402. The retainer 4400additionally comprises a retainer keel 4470 that protrudes from thebottom surface of the top portion 4402 and is oriented to be receivedwithin the longitudinal slot 4206 in the surgical staple cartridge 4200.Retainer keel 4470 may serve to properly orient the retainer 4400 on thestaple cartridge 4200 so that the right and left ramp features 4440 and4450 extend on each side of the firing member 4050. In addition, theretainer keel 4470 may be configured to engage the sled 4230 in thestaple cartridge 4200 and retain the sled 4230 in the unfired positionwhile the retainer 4400 is attached to the staple cartridge 4200. Theretainer keel 4470 may be sized relative to the longitudinal slot 4206to establish a frictional fit therewith to retain the retainer 4400 onthe staple cartridge 4200.

Referring now to FIGS. 10, 14, and 15, after the retainer 4400 has beenattached to the staple cartridge 4200 to form the cartridge assembly4500, the cartridge assembly 4500 may be longitudinally inserted intothe first jaw or frame 4010 so as to bring the right tip 4442 of theright ramp feature 4440 of the authentication key 4430 into contact withan upstanding unlocking tab 4322 on the first lockout arm 4312 and theleft tip 4452 of the left ramp 4450 into contact with an upstandingunlocking tab 4324 on the second lockout arm 4314 of the first lockoutspring 4310. During the initial longitudinal insertion of the assembledcartridge arrangement 4500 in a proximal direction into the frame 4010,the first right cam surface 4444 biases the first lockout arm 4312 ofthe first lockout spring 4310 laterally outward (arrow RL in FIG. 14)and the first left cam surface 4454 biases the second lockout arm 4314laterally outward (arrow LL). Further proximal advancement of thecartridge assembly 4500 into the first jaw or frame 4010 causes thefirst lockout arm 4312 to attain a first intermediate position whereinthe first lockout arm 4312 disengages the corresponding central pin 4058on the firing member 4050 and also causes the second lockout arm 4314 toattain a second intermediate position wherein the second lockout arm4314 disengages the corresponding central pin 4058 on the firing member4050. Continued longitudinal insertion of the assembled cartridgearrangement 4500 in a proximal direction into the first jaw or frame4010 causes the second right cam surface 4446 to further bias the firstlockout arm 4312 laterally outward and the second left cam surface 4456to further bias the second lockout arm 4314 laterally outward until thecartridge assembly 4500 is completely operably seated in the first jawor frame 4010. See FIG. 15. When the cartridge assembly 4500 has beenoperably seated in the first jaw or frame 4010, a distal first retentiontab 4326 on the first lockout arm 4312 engages a corresponding side ofthe staple cartridge 4200 to retain the first lockout arm 4312 in thatunlocked position. Likewise a distal second retention tab 4328 formed onthe second lockout arm 4314 engages another corresponding side of thestaple cartridge 4200 to retain the second lockout arm 4314 in thatunlocked position. When in that position, the first lockout 4300 is inthe unlocked position or, stated another way, is “defeated”. During theunlocking process, the right and left ramps 4440, 4450 may be reinforcedby the firing member 4050 in applications wherein the locking forcesgenerated from the first spring 4310 are high.

The user may then remove the retainer 4400 from the staple cartridge4200 by prying the up the distal latch tab 4422 and lifting the retainer4400 upward until the retainer lugs 4410 disengage the deck ledgeportions 4205 on the cartridge body 4202. With the first lockout 4300defeated or unlocked, the firing member 4050 may be distally advancedfrom the starting position and is in a “ready state”. After the staplecartridge 4200 has been fired, the firing member 4050 is retracted backto the starting position and the second jaw or anvil 4100 is pivotedback to the open position. The spent staple cartridge may then beremoved from the first jaw or frame 4010. Once the spent staplecartridge 4200 has been removed from the first jaw or frame 4010, thefirst and second lockout arms 4312, 4314 spring back into engagementwith the corresponding central pins 4058 on the firing member 4050 toonce again retain the firing member 4050 in the starting position.

Other first lockout spring arrangements are contemplated. For example, afirst lockout spring may only comprise one lateral lockout arm andengage only one side of the firing member. In such arrangements, anauthentication key comprising only one ramp may be needed to unlock thelockout arm.

As discussed above, when the cartridge assembly 4500 is operably seatedin the frame 4010, the first lockout 4300 is defeated or unlocked topermit the firing member 4050 to be distally advanced from that readystate during a staple firing stroke. When attached to the staplecartridge 4200, the retainer 4400 covers the cartridge deck surface 4204and prevents staples from falling out of the staple pockets 4208 as wellas prevents any debris or contamination from entering the longitudinalslot 4206 or staple pockets 4208 which could damage the staple cartridgeor prevent it from operating properly. Other variations of the retainer4400 are contemplated wherein only a portion of the cartridge decksurface 4204 is covered by the retainer. Other configurations may notcover any of staple pockets and/or any of the deck surface.

As was also discussed above, after a staple cartridge has been fired, orat least partially fired, it is removed from the first jaw or frame andthen replaced with another compatible staple cartridge, if desired. Atsuch point, the stapling device can be re-used to continue stapling andincising the patient tissue. In some instances, however, apreviously-fired staple cartridge can be accidentally loaded into theframe. If the firing member were to be advanced distally within such apreviously-fired staple cartridge (sometimes referred to herein as a“spent” cartridge), the stapling instrument would cut the patient tissuewithout stapling it. This could conceivably happen even if the retainer4400 were inadvertently accidentally attached to the spent cartridge andthe resulting cartridge assembly is then seated into the frame so as todefeat the first lockout. The surgical stapling device would similarlycut the patient tissue without stapling it if the firing member wereadvanced distally through a staple firing stroke without a staplecartridge positioned in the cartridge jaw at all. To prevent theseoccurrences from happening, the surgical stapling device 4002 furthercomprises a second lockout 4600 that is configured to prevent the firingmember 4050 from distally advancing through the staple firing strokewhen a spent staple cartridge is seated in the first jaw or frame 4010.

Referring now to FIGS. 6, and 16-19, the knife bar 4042, which maycomprise a solid or laminated structure, comprises a spring tab 4044that is configured to operably interface with a spring plate 4070 thatis mounted or grounded in the bottom of the first jaw or frame 4010. Thespring plate 4070 is provided with a hole 4072 that is configured toreceive the spring tab 4044 therein when the firing member 4050 is inits proximal-most, “starting” position. When in that position, thespring tab 4044 extends into the hole 4072 and may serve to prevent anyinadvertent distal movement of the firing member 4050 until desired bythe operator. In the illustrated example, the second lockout 4600further comprises blocking features or ledges 4602 that are formed inthe bottom of the frame 4010. If the user were to attempt to distallyadvance the firing member 4050 before a cartridge has been operablyseated into the frame 4010, the spring tab 4044 in cooperation with thespring plate 4070 will cause the firing member 4050 to dive downwardbringing the central pins 4058 on the firing member 4050 into contactwith the blocking features 4602 in the frame and thereby prevent thefiring member 4050 from advancing distally.

FIGS. 16 and 17 illustrate operation of the second lockout 4600 when aspent staple cartridge 4200S has been seated into the frame 4010. Asused in this context, the term “spent” staple cartridge may refer to astaple cartridge that has been previously fully fired or partiallyfired. In either case, the sled 4230 will have been distally advancedfrom its proximal-most, unfired position. FIG. 16 depicts the firingmember 4050 in the proximal-most, starting position with the spentstaple cartridge 4200S seated in the frame 4010. FIG. 17 illustrates thesecond lockout 4600 preventing the firing member 4050 from beingdistally advanced into the spent cartridge 4200S. As can be seen in FIG.17, the spring tab 4044 in cooperation with the spring plate 4070 hascaused the firing member 4050 to dive downward bringing the central pins4058 on the firing member 4050 into contact with the blocking features4602 in the frame to thereby prevent the firing member 4050 fromadvancing distally.

FIGS. 18 and 19 illustrate operation of the second lockout 4600 when anunfired staple cartridge 4200 has been seated into the first jaw orframe 4010. As can be seen in FIGS. 18 and 19, the sled 4230 is in itsproximal-most, unfired position. The sled 4230 comprises an unlockingledge 4234 that is configured to be engaged by an unlocking feature 4055that is formed on the firing member body 4052. FIG. 18 illustrates thefiring member 4050 in the proximal-most, starting position with theunfired staple cartridge 4200 seated in the first jaw or frame 4010.When the firing member 4050 is advanced distally, the unlocking feature4055 on the firing member 4050 engages the unlocking ledge 4234 on thesled 4230 which causes the firing member 4050 to be lifted upward sothat the central pins 4058 on the firing member 4050 clear the blockingfeatures 4060 in the first jaw or frame 4010. The firing member 4050 isnow free to continue its distal advancement into the staple cartridge4200 to complete the staple firing stroke. As the firing member 4050 isdistally advanced, the foot 4054 may engage corresponding surfaces onthe bottom of the first jaw or frame 4010 and the top pins 4056 mayengage a cam surface on the anvil 4100 of the surgical stapling device4002 which co-operate to position the anvil 4100 and the staplecartridge 4200 relative to one another. That said, embodiments areenvisioned without one or both of the foot 4054 and top pins 4056.

As can be appreciated from the foregoing, the first lockout 5300 isproximal to the second lockout 4600. The first lockout 5300 ispositioned within the surgical stapling device 4002 such that the firstlockout 5300 is proximal to the sled 4230 of an unfired staple cartridge4200 that has been seated in the first jaw or frame 4010. The firstlockout 5300 is configured to move laterally between engaged positionswherein the first lock prevents distal advancement of the firing member4050 from a starting position and disengaged positions wherein thefiring member 4050 may be distally advanced therefrom (sometimesreferred to herein as a “ready state”). For example, the first andsecond lockout arms 4312 and 4314 are configured to move in a firsthorizontal plane FP between engaged and disengaged positions. See FIG.8. With regard to the second lockout 4600, the firing member 4050 movesvertically between the unlocked and locked positions along a secondplane SP. See FIG. 9. In the illustrated example, the second plane SP isorthogonal to the first plane FP. When the firing member 4050 is in theready state, if firing motions are applied thereto, the firing member4050 may move distally. However, unless a compatible staple cartridgethat has a sled located in an unfired position therein is seated in theframe to unlock the second lockout, the firing member will be preventedfrom distally advancing through the staple firing stroke.

FIGS. 20-23 illustrate another surgical stapling assembly 5000 that issimilar in many aspects to surgical stapling assembly 4000 discussedabove. The surgical stapling assembly 5000 comprises a surgical staplingdevice 5002 that may be employed in connection with the surgicalinstrument 1010 described above or in connection with a variety of othersurgical instruments described in various disclosures that have beenincorporated by reference herein. As can be seen in FIG. 20, thesurgical stapling device 5002 comprises a first jaw or frame 5010 thatis configured to operably support a compatible staple cartridge 4200therein. The first jaw or frame 5010 may be attached to a spine of ashaft assembly of a surgical instrument or robot in the various mannersdescribed herein and/or described in the various disclosures which havebeen incorporated by reference herein. In the illustrated example, thefirst jaw or frame 5010 is attached to the spine of a shaft assembly(not shown in FIG. 20), by a shaft mount flange 5030 that is pinned by apin 5032 or otherwise attached to a proximal end 5014 of the first jaw5010. In particular, pin 5032 is configured to pass through alignedholes 5021 in upstanding sidewalls 5020 of the first jaw or frame 5010as well as through hole 5031 in the shaft mount flange 5030. The shaftmount flange 5030 is configured to interface with an articulation jointarrangement (not shown) that is configured to facilitate articulation ofthe first jaw 5010 relative to the shaft assembly in various knownconfigurations. The surgical stapling device 5002 may also be used inconnection with shaft assemblies that do not facilitate articulation ofthe surgical stapling device 5002.

Still referring to FIG. 20, the surgical stapling device 5002 furthercomprises a firing member assembly 5040 that comprises a knife bar 5042that is attached to a knife member or firing member 5050. The knife bar5042 also interfaces with corresponding components and firing systems inthe surgical instrument or robot to receive firing motions which candistally advance the knife bar 5042 and firing member 5050 through astaple firing stroke from a starting position to an ending position andalso retract the knife bar 5042 and firing member 5050 proximally to thestarting position. In the illustrated arrangement, the firing member5050 comprises a firing member body 5052 that supports a cutting edge orknife edge 5053. The firing member 5050 further comprises a foot 5054that is formed on the bottom of the firing member body 5052 and extendslaterally from each side thereof. The firing member 5050 furthercomprises a pair of top pins or tabs 5056 that extend laterally from thefiring member body 5052 that are adapted to engage ledges on a secondjaw or anvil as will be discussed further herein. Additionally, thefiring member 5050 comprises a pair of central pins or tabs 5058 thatprotrude laterally from each side of the firing member body 5052. Insome of the disclosures incorporated by reference herein, the firingmember 5050 may also be referred to as an “E-Beam” firing member orcutting member.

Further to the above, the surgical stapling device 5002 furthercomprises a second jaw or anvil 5100 that is movable relative to thefirst jaw or frame 5010. The anvil 5100 comprises an anvil body 5102 andan anvil mounting portion 5110. The anvil body 5102 comprises a stapleforming undersurface or tissue contacting surface 5104 that has a seriesof staple forming pockets (not shown) formed therein that are arrangedto form corresponding staples as they are driven into forming contacttherewith. The anvil mounting portion 5110 comprises a pair of laterallyextending anvil pins or trunnion pins 5112 that are configured to bereceived in corresponding trunnion holes 5022 provided in the upstandingsidewalls 5020 of the first jaw or frame 5010. Unlike the anvil 4100described above, the anvil 5100 is pivotally pinned to the frame 5010for pivotal travel relative thereto about a fixed pivot axis. Statedanother way, unlike anvil 4100, anvil 5100 does not materially moveaxially or translate during the anvil closure process. In variousarrangements, the trunnion holes 5022 may be sized relative to thetrunnion pins 5112 to facilitate installation therein and free pivotaltravel of the trunnion pins such that the trunnion pins may have someslight axial movement therein, but any of such axial motion is much lessthan the axial translation of the anvil 4100.

As discussed above, as well as in several of the disclosures which havebeen incorporated by reference herein, the anvil 5100 may be movablefrom an open position wherein a used or spent staple cartridge mayeither be removed from the first jaw or frame 5010 or an unfired staplecartridge may be operably seated therein to a closed position by anaxially movable closure member or end effector closure tube (not shown).For example, as the closure member is moved distally from a proximalposition, the closure tube may operably engage a cam surface on theanvil mounting portion 5110. Such interaction between the closure memberand the anvil mounting portion 5110 causes the anvil mounting portion5110 and the anvil trunnion pins 5112 to pivot until the closure membermoves the anvil 5100 to a fully closed position. When in the fullyclosed position, the staple-forming pockets in the anvil 5100 areproperly aligned with the staples in a corresponding compatible surgicalstaple cartridge that has been operably seated in the first jaw or frame5010. When the axially movable closure member is thereafter moved in aproximal direction, the closure member causes the anvil 5100 to pivotback to the open position.

Further to the above, the surgical stapling device 5002 comprises afirst lockout 5300 that is configured to prevent the firing member 5050from moving distally from its proximal-most, starting position when anauthorized or compatible staple cartridge is not operably seated in theframe 5010. The first lockout 5300 may also be referred to herein as an“authentication” lockout. In the illustrated arrangement, the firstlockout 5300 comprises a single, a pivotal first spring assembly 5310that is supported in a proximal end 5014 of the first jaw or frame 5010and is attached to the shaft mount flange 5030. In one arrangement forexample, the first spring assembly 5310 comprises a first lockout arm5312 and a second lockout arm 5314 that are attached to a central bodyportion 5316. The first spring assembly 5310 is attached to the shaftmount flange 5030 by a pin 5034 that extends through holes 5036 in theshaft mount flange 5030 and through holes 5318 in the first lockout arm5312 and the second lockout arm 5314. The first lockout arm 5312 and thesecond lockout arm 5314 each further comprise a lockout latch feature5320. Each lockout latch feature 5320 is adapted to releasably capturetherein a corresponding central pin 5058 on the firing member 5050 whenthe firing member 5050 is in its proximal-most or starting position. SeeFIG. 21. Additionally, the first lockout spring assembly 5310 furthercomprises a pivot spring or springs 5330 that serve to bias or pivot thefirst spring assembly 5310 downwardly about the pin 5034 to bring thelatch features 5320 into latching or locking engagement with thecorresponding central pins 5058.

The surgical stapling assembly 5000 may further comprise a retainer 5400that is similar to retainer 4400 described above. The retainer 5400comprises a top portion 5402 that is coextensive with and configured tobe received on the deck surface 4204 of the staple cartridge 4200 suchthat when the retainer 5400 is attached to the cartridge body 4202, theretainer 5400 covers all of the staple pockets 4208 in the cartridgebody 4202. Thus, when the retainer 5400 is attached to the staplecartridge 4200, the retainer 5400 may prevent the surgical staplesstored within the staple pockets 4208 from falling out should thesurgical staple cartridge 4200 be inverted or turned upside down priorto use. Other retainer configurations are contemplated wherein theretainer top does not cover all or any of the staple pockets. In theillustrated arrangement, the retainer 5400 may be molded from a polymermaterial and include a plurality of retainer lugs 5410 that areconfigured to latchingly engage outwardly extending deck ledge portions4205 on the staple cartridge body 4202. The retainer 5400 may furthercomprise an angled nose portion 5420 and a distal latch tab 5422 thatthat is configured to latchingly engage the distal nose 4203 of thecartridge body 4202. The retainer 5400 may be removably coupled to thestaple cartridge 4200 by engaging the distal latch tab 5422 with the endof the staple cartridge distal nose 4203 and aligning the retainer 5400such that the underside of the top portion 5402 confronts the cartridgedeck surface 4204 and the retainer lugs 5410 are located above the deckledge portions 4205 on each side of the staple cartridge body 4202.Thereafter, the retainer 5400 may be pressed toward the staple cartridge4200 causing the retainer lugs 5410 to flex laterally outward and snapinto latching engagement with the corresponding deck ledge portions4205. Other retainer latching arrangements disclosed herein may also beemployed to removably affix the retainer 5400 to the staple cartridge4200.

The retainer 5400 further comprises an authentication key 5430 that isadapted to engage key pockets 5322 that are formed in the first lockoutarm 5312 and the second lockout arm 5314. As can be seen in FIG. 20, theauthentication key 5430 protrudes proximally from a proximal end 5401 ofthe top portion 5402 of the retainer 5400 and comprises a right rampfeature 5440 and a left ramp feature 5450 that are separated by a spacethat is sized to receive the firing member body 5052 therebetween. Inthe illustrated example, the ramps 5440 and 5450 angle downward from thetop portion 5402 of the retainer 5400 and are configured to enter thekey pockets 5322 in the first and second lockout arms 5312, 5314.

In use, the retainer 5400 is removably attached to the staple cartridge4200 to form a cartridge assembly 5500. Thereafter, the cartridgeassembly is initially inserted into the first jaw or frame 5010 so as toinsert the ramps 5440 and 5450 of the authentication key 5430 into thekey pockets 5322 in the first and second lockout arms 5312, 5314. SeeFIG. 21. Further longitudinal advancement of the cartridge assembly 5500into the first jaw or frame 5010 in a proximal direction causes theramps 5440 and 5450 to pivot the first spring 5310 upward into adisengaged or unlocked position wherein the latch features 5320 havedisengaged the corresponding central pins 5058. See FIG. 22. When thecartridge assembly 5500 has been operably seated in the first jaw orframe 5010, a distally facing detent 5326 that is formed on each of thefirst and second lockout arms 5312, 5314 retainingly engage a proximalend of the staple cartridge 4200 as shown in FIG. 22. Such arrangementserves to retain the first spring 5310 in the disengaged position. Whenin that position, the first lockout 5300 is in the unlocked position orstated another way is “defeated”, unlocked or unlatched. The user maythen remove the retainer 5400 from the staple cartridge 4200 by pryingthe up the distal latch tab 5422 and lifting the retainer 5400 upwarduntil the retainer lugs 5410 disengage the deck ledge portions 4205. Inthe illustrated example, the term “LIFT” is molded, embossed, imprintedor otherwise provided on the nose portion 5420 to provide removalinstructions to the user. The surgical staple cartridge 5200 remainingin the frame 5010 is ready to be fired. See FIG. 23.

The surgical stapling device 5002 also includes a second lockout 5600that is very similar to the second lockout 4600 described above.Referring now to FIGS. 20 and 21, the knife bar 5042, which may comprisea solid or laminated structure, comprises a spring tab 5044 that isconfigured to operably interface with a spring plate 5070 that ismounted in the bottom of the first jaw 5010. The spring plate 5070serves to pivot the firing member 5050 downward such that the centralpins 5038 thereon contact the frame blocking or abutment features (notshown) in the bottom of the frame 5010 unless an unlocking feature 5055on the firing member 5050 engages an unlocking ledge 4234 on the sled4230 causing the firing member 5050 to be lifted upward so that thecentral pins 5058 on the firing member 5050 clear the blocking featuresin the frame 5010 was discussed above.

FIGS. 24-26 illustrate an alternative compatible surgical staplecartridge 4200′ that is configured to actuate the first lockout 5300 inthe manner described above. In this arrangement, however, theauthentication key 5030′ is formed on the cartridge pan 4220′. As can beseen in FIG. 24, the authentication key 5030′ comprises a right rampfeature 5440′ and a left ramp feature 5450′ that are bent into thecartridge pan 4220′ to protrude proximally therefrom. A reinforcementrib 5441′ may be embossed into each joint where the ramps 5440′ and5450′ are formed to provide additional support and rigidity to each ofthe ramps 5440′, 5450′. In the illustrated example, the ramp 5440′ hasan angled proximal tip 5442′ and the ramp 5450′ contains an angledproximal tip 5452. The tips 5442′, 5452′ are each configured to enterthe key pockets 5322 in the first and second lockout arms 5312, 5314 topivot the first lockout 5300 in the above described manner. The firstlockout 5300 otherwise operates in the manner described above.

Referring to FIG. 27, an example of a surgical stapling assembly 6000 isshown. The surgical stapling assembly 6000 comprises a surgical staplingdevice 6002 that may be employed in connection with the surgicalinstrument 1010 described above or in connection with a variety of othersurgical instruments or robots described in various disclosures thathave been incorporated by reference herein. As can be seen in FIG. 27,the surgical stapling device 6002 comprises a first jaw, or frame 6010that is configured to operably support a staple cartridge 4200 therein.The first jaw or frame 6010 is attached to a spine of the shaft assembly(not shown) by a shaft mount flange 4030 (FIG. 6) in the various mannersdescribed herein. The surgical stapling device 6002 further comprises afiring member assembly that comprises a knife bar that is attached to aknife member or firing member 4050 as was described above.

Further to the above, the surgical stapling device 6002 comprises asecond jaw or anvil 6100 that is movable relative to the first jaw orframe 6010. The anvil 6100 is similar to anvil 4100 described above andcomprises an anvil body 6102 and an anvil mounting portion 6110. Theanvil body 6102 comprises a staple forming undersurface or tissuecontacting surface 6104 that has a series of staple forming pockets (notshown) formed therein that are arranged to form corresponding staples asthey are driven into forming contact therewith. The anvil mountingportion 6110 comprises a pair of laterally extending anvil pins ortrunnion assemblies 6112. Each trunnion assembly 6112 comprises anoutwardly and downwardly protruding lock lug portion 6120 that has atrunnion pin 6122 extending therefrom. Each trunnion pin 6122 isconfigured to be received in corresponding trunnion slots 6022 in theupstanding sidewalls 6020 of the first jaw 6010. In the illustratedarrangement, the trunnion slots 6022 are somewhat “kidney-shaped” andfacilitate pivotal as well as axial travel of the corresponding trunnionpins 6122 therein.

As discussed above, as well as in several of the disclosures which havebeen incorporated by reference herein, the anvil 6100 may be movablefrom an open position wherein a used or spent surgical staple cartridgemay either be removed from the frame 6010 or a fresh, new staplecartridge may be operably seated therein to a closed position by anaxially movable closure member or end effector closure tube (not shown).For example, as the closure member is moved distally from a proximalposition, the closure member may operably engage a cam surface on theanvil mounting portion 6110. Such interaction between the closure memberand the anvil mounting portion 6110 causes the anvil mounting portion6110 and the anvil trunnion pins 6122 to pivot and translate up thetrunnion slots 6022 until the closure member moves the anvil 6100 to aclosed position. When in the fully closed position, the staple-formingpockets in the anvil 6100 are properly aligned with the staples in acorresponding compatible staple cartridge that has been operably seatedin the frame 6010. When the axially movable closure member is thereaftermoved in a proximal direction, the closure member interfaces with anupstanding tab 6114 on the anvil mounting portion 6110 to return theanvil 6100 to the open position.

Further to the above, the surgical stapling device 6002 comprises afirst lockout 6300 that is configured to prevent the second jaw or anvil6100 from being movable from the open position to the closed position bythe closure member. The first lockout 6300 may also be referred toherein as an “authentication” lockout. In the illustrated arrangement,the first lockout 6300 comprises a first lockout arm 6310 that ispivotally supported in the frame 6010 by a lockout pin 6312 that isattached thereto. In one example, the first lockout arm 6310 isfabricated from stainless steel or the like and the lockout pin 6312 iswelded or otherwise attached thereto. The lockout pin 6312 is pivotallyseated in a pivot hole 6013 in the frame 6010 to facilitate pivotaltravel of the first lockout arm 6310 between a locked position and anunlocked position. See FIG. 28. In the illustrated example, a lockoutfeature 6316 is formed on the proximal end 6314 of the first lockout arm6310 and is configured to blockingly engage the lock lug portion 6120 onthe corresponding trunnion assembly 6112 when the first lockout arm 6310is in an engaged position. When the lockout feature 6316 blockinglyengages the lock lug portion 6120 on the trunnion assembly 6112, thelockout feature 6316 prevents the trunnion assembly 6112 from travelingwithin the corresponding trunnion slot 6022 in the first jaw or frame6010 which effectively prevents the second jaw or anvil 6100 from movingfrom the open position to the closed position should a closure motion beapplied thereto. This position of the first lockout arm 6310 may bereferred to herein as a “jaw locking position”. It will be appreciatedthat the lockout feature 6316, as well as the lock lug portion 6120, maybe sufficiently robust so as to resist substantial closure motions thatapplied to the anvil 6100 to prevent closure of the anvil 6100.

Still referring to FIG. 28, a first lockout spring 6330 is supported ina corresponding sidewall 6020 of the first jaw or frame 6010 to bias thefirst lockout arm 6310 in a locking direction LD to the engaged, lockedor “jaw locking” position wherein the first lockout arm 6310 preventsthe anvil 6100 from moving from the open position to the closedposition. A travel limiting plate or mounting plate 6070 is supportedwithin the frame 6010 and attached to the shaft mounting assembly. Thetravel limiting plate 6070 also provides lateral support to the firstlockout arm 6310 when in the jaw locking position. See FIG. 29. As canbe seen in FIGS. 28 and 29, the first lockout arm 6310 further comprisesan upstanding actuator cam arm 6322 that is formed on a distal end 6320of the first lockout arm 6310. The actuator cam arm 6322 comprises anactuator cam surface 6324. The first lockout arm 6310 further comprisesa retention tab 6326 that is configured to be received within acorresponding opening or tab window 6024 that is provided in a framesidewall 6020.

Turning now to FIG. 27, the stapling assembly 6000 further comprises aretainer 6400 that is configured to be removably coupled to the surgicalstaple cartridge 4200. In various embodiments, the retainer 6400 issubstantially similar to the retainer 4400 described above except forthe authentication key 6430. In the illustrated arrangement, theretainer 6400 comprises a top portion 6402 that is coextensive with andconfigured to be received on the deck surface 4204 such that when theretainer 6400 is attached to the cartridge body 4202, the retainer 6400covers all of the staple pockets 4208 in the cartridge body 4202. Inalternative versions the retainer top may only cover some of the staplepockets or none at all. The retainer 6400 may be molded from a polymermaterial and include a plurality of retainer lugs 6410 that areconfigured to latchingly engage outwardly extending deck ledge portions4205 that are formed on the staple cartridge body 4202. The retainer6400 may further comprise an angled nose portion 6420 and a distal latchtab 6422 that that is configured to latching engage the distal nose 4203of the staple cartridge body 4202. The retainer 6400 may be removablycoupled to the surgical staple cartridge 4200 by engaging the latch tab6422 with the end of the distal nose 4203 and aligning the retainer 6400such that the underside of the top portion 6402 of the retainer 6400confronts the cartridge deck surface 4204 and the retainer lugs 6410 arelocated above the deck ledge portions 4205 on each side of the cartridgebody 4202. Thereafter, the retainer 6400 may be pressed toward thestaple cartridge 4200 causing the retainer lugs 6410 to flex laterallyoutward and snap into latching engagement with the corresponding deckledge portions 4205. Other retainer latching arrangements disclosedherein may also be employed to removably affix the retainer 6400 to thestaple cartridge 4200. The retainer 6400 may be removed from the staplecartridge 4200 by applying a prying motion to the distal latch tab 6422and lifting upward until the retainer lugs 6410 disengage the deck ledgeportions 4205. In the illustrated example, the term “LIFT” is molded orembossed into the nose portion 6420 to provide removal instructions tothe user.

Referring now to FIGS. 32-35, the retainer 6400 further comprises anauthentication key 6430 that is configured to defeat, unlock or unlatchthe first lockout 6300 when the retainer 6400 is attached to thesurgical staple cartridge 4200 and the surgical staple cartridge 4200has been operably seated in the first jaw or frame 6010. As can be seenin FIG. 32, the authentication key 6430 protrudes proximally from aproximal end 6401 of the top portion 6402 of the retainer 6400 andcomprises an angled ramp feature 6440 that is positioned on one side ofthe cartridge axis CA when the retainer 6400 is attached to the staplecartridge 4200. In the illustrated example, the ramp 6440 anglesdownward from the top portion 6402 of the retainer 6400 and comprises aproximal tip 6442 that defines a first or proximal cam surface 6444 thatangles inward at the tip. A second or distal cam surface 6446 is locatedbelow the first cam surface 6444. These dual sequential cam surfaces6444, 6446 are configured to interface with the actuator cam surface6324 on the actuator cam arm 6322 to move the first lockout arm 6310from the locked or jaw locking position to the unlocked or jaw closureposition. Such arrangement affords little room for the authenticationkey 6430 to unlockingly actuate the actuator cam arm 6322 when thestaple cartridge supporting the retainer 6400 is operably seated in thefirst jaw or frame 6010. The dual cam surface arrangement facilitatespivotal actuation of the first lockout arm 6310 a sufficient pivotaldistance required to place the first lockout arm 6310 in the disengagedor jaw closure position. This amount of pivotal travel may be more thantwice the width of the ramp 6440, for example.

FIG. 29 illustrates the first lockout 6300 in the locked or jaw lockingposition wherein the first lockout arm 6310 is pivoted into positionwherein the lockout feature 6316 is in blocking engagement with the locklug portion 6120 on the trunnion assembly 6112 on the anvil 6100.Referring now to FIG. 36, after the retainer 6400 has been attached tothe surgical staple cartridge 4200 to form a cartridge assembly 6500,the cartridge assembly 6500 may be inserted into the first jaw or frame6010 such that the first cam surface 6444 engages the actuator camsurface 6324 on the actuator cam arm 6322 and begins to pivot the firstlockout arm 6310 out of the locked or jaw locking position to anintermediate position. Continued longitudinal insertion of the assembledcartridge arrangement 6500 into the frame 6010 in a proximal directioncauses the first cam surface 6444 to disengage the actuator cam surface6324 and the lower, second cam surface 6446 to engage the actuator camsurface 6324 to move the first lockout arm 6310 from the intermediateposition to the jaw closure position. See FIG. 37. When the firstlockout arm 6310 is in the locked or jaw locking position, the actuatorcam arm 6322 is located distal to the firing member 6050. The lowersecond cam surface 6446 completes the pivotal travel of the firstlockout arm 6310 so that the actuator cam arm 6322 does not interferewith the operation of the firing member 6050 while allowing the anvil6100 to move to a closed position. When the first lockout arm 6310 is inthe unlocked or jaw closure position, the retention tab 6326 is receivedwithin the tab window 6024 in the frame sidewall 6020 and is retainedtherein by the staple cartridge 4200. When in that position, the firstlockout 6300 is in the jaw closure position or stated another way is“defeated”, unlocked or unlatched. The user may then remove the retainer6400 from the surgical staple cartridge 4200 by prying the up the distallatch tab 6422 and lifting the retainer 6400 upward until the retainerlugs 6410 disengage the deck ledge portions 4205.

As can be appreciated from the foregoing, the space required tointerface with the first lockout 6300 is available when the anvil 6100is open, but is not available when the anvil 6100 is closed. Theretainer 6400 is present on the cartridge 4200 only when the anvil 6100is open during the cartridge insertion process. Thereafter, the retainer6400 is removed from the staple cartridge 4200. The anvil 6100 cannot beclosed when the retainer 6400 is in place. When closed, the anvil 6100occupies the space that was occupied by the retainer 6400. Thisarrangement is very different from a cartridge-based authentication keyarrangement that remains resident in the stapling device during theclosing and firing of the device. Dual sequential ramps/camming surfacesare employed in this arrangement to move the first lockout arm 6310laterally through a distance that is approximately at least twice aswide as the authentication key 6430. This may be an important aspect tothis design.

The proximal high ramp or camming surface begins the unlocking movementand engages the upstaging actuator cam arm 6322 that is distal to thefiring member 4050. It will be appreciated that a stationary lockingfeature that is unable to be moved or removed would not be able to reachthis area without affecting the ability to move the firing member 4050through the staple firing stroke. The second lower ramp/camming surfacecompletes the unlocking movement of the first unlocking arm 6310 so thatit is completely clear for the anvil 6100 to close. The secondramp/camming surface is sequentially spaced behind the firstramp/camming surface so that it can only engage the distal end of thefirst lockout arm 6310 after the first ramp/camming surface has pivotedit to that intermediate position.

FIG. 38 illustrates the staple cartridge 4200 operably seated in theframe 6010 with the first lockout 6300 defeated and the retainer 6400removed from the staple cartridge 4200. The anvil 6100 is now movablebetween the open and closed position and the surgical staple cartridge4200 is otherwise capable of being fired. In at least one form, thesurgical stapling device 6002 may also include a second lockout 4600that is configured to prevent the firing member 4050 from distallyadvancing through the staple firing stroke when a spent staple cartridgeis seated in the first jaw or frame 6010 in the various mannersdiscussed above. After the staple cartridge 4200 has been fired, thefiring member 4050 is retracted back to the starting position and thesecond jaw or anvil 6100 is pivoted back to the open position. The spentstaple cartridge may then be removed from the first jaw or frame 6010.Once the spent staple cartridge 4200 has been removed from the first jawor frame 6010, the first lockout spring biases the first lockout arm6310 back to the jaw locking position wherein second jaw or anvil 6100is prevented from moving from the open to closed position.

FIG. 38A is another top view of the surgical stapling device 6002 with acartridge assembly 6500′ seated therein that comprises a retainer 6400′that is attached to a staple cartridge 4200. The retainer 6400′ issimilar to retainer 6400 described above, except that the authenticationkey 6430′ and ramp 6440′ are blended into a side wall 6403′ of theretainer 6400′. The retainer 6400′ may otherwise operate in the samemanner as retainer 6400 discussed above.

FIG. 39 is a perspective view of a proximal end of a staple cartridge4200″ that is identical to staple cartridge 4200 described above, exceptthat an authentication key 4228″ is folded into a cartridge pan 4220″that is attached to a cartridge body 4202″ as shown. As shown in FIGS.40-42, the staple cartridge 4200″ is configured to be used in connectionwith a surgical stapling assembly 6000′ that comprises a surgicalstapling device 6002′ that comprises a first lockout 6300′. Surgicalstapling device 6002′ is substantially identical to surgical staplingdevice 6002 except for a distal end of 6311′ of a first lockout arm6310′ that is pivotally supported in a frame 6010′ by a lockout pin6312′ that is attached thereto. A proximal end 6314′ of the firstlockout arm 6310′ is identical to the proximal end 6314 of the firstlockout arm 6310 and is configured to blockingly engage a lock lugportion on the corresponding trunnion assembly 6112′ of an anvil 6100′in the manner described in detail above. A lockout spring 6330′ servesto pivot the first lockout arm 6310′ to the locked position in themanner described above. FIG. 40 illustrates insertion of the staplecartridge 4200″ into the frame 6010′. As can be seen in FIG. 40, thefirst lockout arm 6310′ is in a locked or jaw locking position whereinthe proximal end 6314′ (FIG. 41) is in blocking engagement with the locklug on the trunnion assembly 6112′ to prevent closure of the anvil6100′. FIGS. 41 and 42 illustrate the staple cartridge 4200″ fullyseated in the frame 6010′. As can be seen in FIGS. 41 and 42, theauthentication key 4228″ has pivoted the first lockout arm 6310′ into ajaw closure position and retains the first lockout arm 6310′ in thatposition. When in the jaw closure position, the anvil 6100 is free to bepivoted closed as illustrated in FIG. 41. In this arrangement, theauthentication key 4228″ comprises a portion of the staple cartridge andis not mounted to a removable retainer. The authentication key 4228″retains the first lockout arm 6310′ in the jaw closure position whilethe staple cartridge remains seated in the frame 6010′ throughout thestapling procedure.

After the staple cartridge 4200′ has been fired, the user returns afiring member of the surgical stapling device 6002′ back to a startingposition and the anvil 6100′ is pivoted to the open position allowingthe spent staple cartridge to be removed from the frame 6010′. When thespent staple cartridge 4200′ is removed from the frame 6010′, thelockout spring 6330′ pivots the first lockout arm 6310′ back to the jawlocking position. In some instances, the spent staple cartridge may be“reprocessed” for reuse in another stapling procedure and/or anotherstapling device. It is important for those reprocessing entities toinstall the proper surgical staples as well as the proper number ofsurgical staples into the reprocessed staple cartridge required to makethat cartridge compatible with a particular stapling device to ensurethe desired results during use. Unfortunately, some reprocessingentities at times fail to properly reprocess the spent cartridge, yetstill offer the reprocessed spent cartridge as a new cartridgemanufactured by the original manufacturer. The end user may unwittinglyobtain the defective cartridge and use it in a surgical stapling device.In an effort to prevent such instances from occurring, once the spentcartridge has been removed from the surgical stapling device 6002′, theauthentication key 4228″ may be irretrievably flattened. For example, ascan be seen in FIG. 39, the authentication key 4228″ is formed with apair of lugs 4229″ that are slidably received in slots 4223″ provided inthe cartridge pan 4220″. By a applying a flattening force FF to the tipof the authentication key 4228″ the key may be flattened against theproximal end 4225″ of the cartridge pan 4220″ rendering theauthentication key 4228″ inoperable for future use.

FIG. 43 is a perspective view of a proximal end of a staple cartridge4200′″ that is identical to staple cartridge 4200 described above,except that an authentication key 4228′ is folded into a cartridge pan4220′″ that is attached to a cartridge body 4202′″ as shown. In thisembodiment, the authentication key 4228′ protrudes from a top flap4225′″ of the cartridge pan 4220′″ that is folded over a portion of acartridge deck 4204′″ which may serve to enhance the strength of theauthentication key 4228′. The authentication key 4228′ may furthercomprise a folded stiffener wall portion 4227′ and have an angledactuation or cam surface 4229A″ and a latch surface 4229B′″. As shown inFIGS. 44-46, the staple cartridge 4200′″ is configured to be used inconnection with a surgical stapling assembly 6000″ that comprises asurgical stapling device 6002″ that comprises a first lockout 6300″.

In many aspects, surgical stapling device 6002″ is substantiallyidentical to surgical stapling device 6002 and includes a first lockoutarm 6310″ that is pivotally supported in a frame 6010″ by a lockout pin6312″ that is attached thereto. A proximal end 6314″ of the firstlockout arm 6310″ may be identical to the proximal end 6314 of the firstlockout arm 6310 and is configured to blockingly engage a lock lugportion on the corresponding trunnion assembly 6112″ of an anvil 6100″in the manner described in detail above. A lockout spring 6330″ servesto pivot the first lockout arm 6310″ to the locked or jaw lockingposition in the manner described above. A distal end of the firstlockout arm 6310″ comprises an upstanding actuator cam arm 6322″ that isconfigured to be engaged by the authentication key 4228′ on the staplecartridge 4200′″.

FIG. 46 illustrates insertion of the staple cartridge 4200′″ into theframe 6010″. The first lockout arm 6310″ is in a jaw locking positionwherein the proximal end 6314″ is in blocking engagement with the locklug on the trunnion assembly 6112′ to prevent closure of the anvil6100″. During the initial insertion of the staple cartridge 4200′″ intothe frame 6010″, the angled actuation or cam surface 4229A′″ hascontacted the upstanding actuator cam arm 6322″ to begin to pivot thefirst lockout arm 6310″ out of the jaw locking position. Continuedinsertion of the staple cartridge 4200′″ into the frame 6010″ causes theauthentication key 4228′ to pivot the first lockout arm 6310″ to theunlocked or jaw closure position wherein the actuator cam arm 6322″ hasdisengaged the angled cam surface 4229A′″ and is retained in thatunlocked or jaw closure position by the latch surface 4229B′″ on theauthentication key 4228′. See FIGS. 44 and 45. When in the unlocked orjaw closure position, the anvil 6100″ is free to be pivoted closed. Inthis arrangement, the authentication key 4228′ comprises a portion ofthe staple cartridge and is not mounted to a removable retainer. Theauthentication key 4228′ retains the first lockout arm 6310″ in the jawclosure position while the staple cartridge 4200′″ remains seated in theframe 6010″ throughout the stapling procedure.

FIG. 47 is a perspective view of a proximal end of a staple cartridge4700 that, for the most part, is identical to staple cartridge 4200described above, except that an authentication key 4728 is folded into acartridge pan 4720 that is attached to a cartridge body 4702 as shown.In this embodiment, the authentication key 4728 protrudes from a topflap 4725 of the cartridge pan 4720 that is folded over a portion of acartridge deck 4704 which may serve to enhance the strength of theauthentication key 4728. The authentication key 4728 comprises an angledactuation or cam surface 4729A and a latch surface 4729B. Theauthentication key 4728 is folded to extend below a plane defined by thecartridge deck 4704 and may be employed, for example, with surgicalstapling device 6002″ in the above described manner or other surgicalstapling devices with slightly shorter actuator cam arms.

FIGS. 48-51 illustrate another surgical stapling assembly 7000 that issimilar in many aspects to surgical stapling assembly 6000 discussedabove. The surgical stapling assembly 7000 comprises a surgical staplingdevice 7002 that may be employed in connection with the surgicalinstrument 1010 described above or in connection with a variety of othersurgical instruments or robots described in various disclosures thathave been incorporated by reference herein. As can be seen in FIG. 48,the surgical stapling device 7002 comprises a first jaw, or frame, 7010that is configured to operably support a staple cartridge 4200 therein.The first jaw or frame 7010 is attached to a spine of the shaft assemblyin the various manners described herein. In the illustrated example, thefirst jaw or frame 7010 is attached to the spine of a shaft assembly(not shown in FIG. 48), by a shaft mount flange 7030 that is pinned by apin 7032 or otherwise attached to a proximal end 7014 of the first jaw7010. In particular, pin 7032 is configured to pass through alignedholes 7021 in upstanding sidewalls 7020 of the first jaw or frame 7010as well as through hole 7031 in the shaft mount flange 7030. The shaftmount flange 7030 is configured to interface with an articulation jointarrangement (not shown) that is configured to facilitate articulation ofthe first jaw 7010 relative to the shaft assembly in various knownconfigurations. The surgical stapling device 7002 may also be used inconnection with shaft assemblies that do not facilitate articulation ofthe surgical stapling device 7002.

Still referring to FIG. 48, the surgical stapling device 7002 furthercomprises a firing member assembly 4040 that comprises a knife bar 4042that is attached to a knife member or firing member 4050. Operation ofthe firing member 4050 and the knife bar 4042 were discussed in detailabove. Further to the above, the surgical stapling device 7002 furthercomprises a second jaw or anvil 7100 that is movable relative to thefirst jaw or frame 7010. The anvil 7100 comprises an anvil body 7102 andan anvil mounting portion 7110. The anvil body 7102 comprises a stapleforming undersurface or tissue contacting surface 7104 that has a seriesof staple forming pockets formed therein (not shown) that are arrangedto form corresponding staples as they are driven into forming contacttherewith. The anvil mounting portion 7110 comprises a pair of laterallyextending anvil pins or trunnion pins 7112 that are configured to bereceived in corresponding trunnion holes 7022 in the upstandingsidewalls 7020 of the first jaw or frame 7010. Unlike the anvil 6100described above, the anvil 7100 is pivotally pinned to the frame 7010for pivotal travel relative thereto about a fixed pivot axis. Statedanother way, unlike anvil 6100, anvil 7100 does not materially moveaxially or translate during the anvil closure process.

As discussed above, as well as in several of the disclosures which havebeen incorporated by reference herein, the anvil 7100 may be movablefrom an open position wherein a used or spent staple cartridge mayeither be removed from the first jaw or frame 7010 or an unfired staplecartridge may be operably seated therein to a closed position by anaxially movable closure member or end effector closure tube 7600. Forexample, as the closure tube 7600 is moved distally from a proximalposition, the closure tube 7600 may operably engage a cam surface 7113on the anvil mounting portion 7110. Such interaction between the closuretube 7600 and the anvil mounting portion 7110 causes the anvil mountingportion 7110 and the trunnion pins 7112 to pivot until the closuremember moves the anvil 7100 to a fully closed position. When in thefully closed position, the staple-forming pockets in the anvil 7100 areproperly aligned with the staples in a corresponding compatible staplecartridge 4200 that has been operably seated in the first jaw or frame7010. When the axially movable closure tube 7600 is thereafter moved ina proximal direction, a tab 7602 on the closure tube 7600 interfaceswith a tab 7114 on the anvil mounting portion 7110 to cause the anvil7100 to pivot back to the open position.

Further to the above, the surgical stapling device 7002 comprises afirst lockout 7300 that is configured to prevent the second jaw or anvil7100 from being movable from the open position to the closed position bythe closure member 7600. The first lockout 7300 may also be referred toherein as an “authentication” lockout. In the illustrated arrangement,the first lockout 7300 comprises a first lockout arm 7310 that ispivotally supported in the first jaw or frame 7010 by a lockout pin 7312that is attached thereto. In one example, the first lockout arm 7310 isfabricated from stainless steel or the like and the lockout pin 7312 maybe machined into the proximal end thereof. The lockout pin 7312 ispivotally seated in a pivot hole 7013 in the frame 7010 to facilitatepivotal travel of the first lockout arm 7310 in a locking direction LDbetween a jaw locking position and a jaw closure position. See FIG. 50.In the illustrated example, the first lockout arm 7310 is configured toblockingly engage a lock lug portion 7120 protruding downward from theanvil mounting portion 7110 when the first lockout arm 7310 is the jawlocking position. When the first lockout arm 7310 is in that locked orengaged position, pivotal travel of the anvil 7100 is prevented when thelock lug portion 7120 contacts the first lockout arm 7310. It will beappreciated that the first lockout arm 7310, as well as the lock lugportion 7120, are each sufficiently robust so as to resist substantialclosure motions that applied to the anvil 7100 to prevent closure of theanvil 7100.

Referring now to FIG. 50, a first lockout spring 7330 is supported in acorresponding sidewall 7020 of the first jaw or frame 7010 to bias thefirst lockout arm 7310 in the locking direction LD to the locked or jawlocking position wherein the first lockout arm 7310 prevents the anvil7100 from moving from the open position to the closed position. As canbe seen in FIG. 50, the first lockout arm 7310 further comprises anupstanding actuator cam arm 7322 that is formed on a distal end 7320 ofthe first lockout arm 7310. The actuator cam arm 7322 comprises anactuator cam surface 7324 thereon. The first lockout arm 7310 furthercomprises a retention tab 7326 that is configured to be received withina corresponding opening or tab window 7024 provided in a frame sidewall7020.

Turning again to FIG. 48, the stapling assembly 7000 further comprises aretainer 7400 that is configured to be removably coupled to the surgicalstaple cartridge 4200. In many aspects, the retainer 7400 issubstantially similar to the retainer 4400 described above. In theillustrated arrangement, the retainer 7400 comprises a top portion 7402that is coextensive with and configured to be received on the decksurface 4204 of the staple cartridge body 4202. When the retainer 7400is attached to the cartridge body 4202, the retainer 7400 covers all ofthe staple pockets 4208 in the cartridge body 4202. In other versionsonly some or none of the staple pockets are covered. The retainer 7400may be molded from a polymer material and include a plurality ofretainer lugs 7410 that are configured to latchingly engage outwardlyextending deck ledge portions 4205. The retainer 7400 may furthercomprise an angled nose portion 7420 and a distal latch tab 7422 thatthat is configured to latching engage the distal nose 4203 of thecartridge body 4202.

The retainer 7400 may be removably coupled to the surgical staplecartridge 4200 by engaging the distal latch tab 7422 with the end of thedistal nose 4203 and aligning the retainer 7400 such that the undersideof the top portion 7402 confronts the cartridge deck surface 4204 andthe retainer lugs 7410 are located above the deck ledge portions 4205 oneach side of the cartridge body 4202. Thereafter, the retainer 7400 maybe pressed toward the staple cartridge 4200 causing the retainer lugs7410 to flex laterally outward and snap into latching engagement withthe corresponding deck ledge portions 4205. Other retainer latchingarrangements disclosed herein may also be employed to removably affixthe retainer 7400 to the staple cartridge 4200. The retainer 7400 may beremoved from the staple cartridge 4200 by applying a prying motion tothe distal latch tab 7422 and lifting upward until the retainer lugs7410 disengage the deck ledge portions 4205. In the illustrated example,the term “LIFT” is molded or embossed into the nose portion 7420 toprovide removal instructions to the user.

Referring now to FIGS. 53-56, the retainer 7400 further comprises anauthentication key 7430 that is configured to defeat the first lockout7300 when the retainer 7400 is attached to the surgical staple cartridge4200 and the surgical staple cartridge 4200 has been operably seated inthe first jaw or frame 7010. As can be seen in FIG. 53, theauthentication key 7430 protrudes proximally from a proximal end 7401 ofthe top portion 7402 of the retainer 7400 and comprises a right rampfeature 7440 and a left ramp feature 7450 that are separated by a space7460 that is sized to receive the firing member body 4052 therebetween.In the illustrated example, the right ramp 7440 angles downward from thetop portion 7402 of the retainer 7400 and comprises a proximal right tip7442 that comprises a first right or proximal right cam surface 7444that angles inward at the tip. A second right or distal right camsurface 7446 is located below the first right cam surface 7444. Thesedual sequential cam surfaces 7444, 7446 are configured to interface withthe actuator cam surface 7324 on the actuator cam arm 7322 to move thefirst lockout arm 7310 from the jaw locking position to a “jaw closureposition” in the various manners described above. Similarly, the leftramp 7450 angles downward from the top portion 7402 of the retainer 7400and comprises a proximal left tip 7452 that comprises a first left orproximal left cam surface 7454 that angles inward at the tip. A secondleft or distal left cam surface 7456 is located below the first rightcam surface 7444. These dual sequential cam surfaces 7454, 7456 areconfigured to interface with the actuator cam surface 7324 on theactuator cam arm 7322 of a first lockout arm 7310 that is mounted on theleft or opposite side of a frame axis FA. The retainer 7400 additionallycomprises a retainer keel 7470 that protrudes from the bottom surface ofthe top portion 7402 and is oriented to be received within thelongitudinal slot 4206 in the surgical staple cartridge 4200. Retainerkeel 7470 may serve to properly orient the retainer 7400 on the surgicalstaple cartridge 4200 so that the right and left ramps 7440 and 7450extend on each side of the firing member 4050. The retainer keel 7470may also be sized relative to the longitudinal slot 4206 to create africtional retaining engagement therewith when the retainer 7400 isattached to the staple cartridge 4200 and also retain the sled 4230 inthe unfired position with the staple cartridge 4200.

In use, the retainer 7400 is attached to the staple cartridge 4200 inthe various manners disclosed herein to form a cartridge assembly 7500.The cartridge assembly 7500 may then be inserted into the first jaw orframe 7010 so as to bring the right ramp 7440 of the authentication key7430 into engagement with the actuator cam surface 7324 on the actuatorcam arm 7322. During the initial proximal insertion of the cartridgeassembly 7500, the first right cam surface 7444 biases the actuator camarm 7322 laterally outward to an intermediate position. Furtherlongitudinal advancement of the cartridge assembly 7500 into the firstjaw or frame 7010 in a proximal direction causes the first cam surface7444 to disengage the actuator cam surface 7324 and the second right camsurface 7446 to engage the actuator cam surface 7324 to move the firstlockout arm 7310 from the intermediate position into the fullydisengaged or jaw closure position. When the first lockout arm 7310 isin the unlocked or jaw closure position, the retention tab 7326 isreceived within the tab window 7024 in the frame sidewall 7020 and isretained therein by the staple cartridge 4200. When in that position,the first lockout 7300 is in the unlocked or jaw closure position orstated another way is “defeated”, unlocked or unlatched. The user maythen remove the retainer 7400 from the surgical staple cartridge 4200 byprying the up the distal latch tab 7422 and lifting the retainer 7400upward until the retainer lugs 7410 disengage the deck ledge portions4205. The anvil 7100 is now movable between the open and closed positionand the surgical staple cartridge 4200 is otherwise capable of beingfired. In at least one version, the surgical stapling device 7002 mayinclude a second lockout 4600 that is configured to prevent the firingmember 4050 from distally advancing through the staple firing strokewhen a spent staple cartridge is seated in the first jaw or frame 7010in the various manners discussed above. After the staple cartridge 4200has been fired, the firing member 4050 is retracted back to the startingposition and the second jaw or anvil 7100 is pivoted back to the openposition. The spent staple cartridge may then be removed from the firstjaw or frame 7010. Once the spent staple cartridge 4200 has been removedfrom the first jaw or frame 7010, the first lockout spring biases thefirst lockout arm 7310 back to an engaged or jaw locking positionwherein second jaw or anvil is prevented from moving from the open toclosed position.

As can be seen in FIG. 52, the surgical stapling device 7002 employs afirst lockout 7300 that is positioned within the first jaw or frame 7010on a first side 7005 of a frame axis FA that lies on a common plane withthe cartridge axis CA when a staple cartridge is operably seated in theframe 7010. FIG. 56 illustrates a second surgical stapling device 7002′that is identical to surgical stapling device 7002, except that thefirst lockout 7300′ is positioned within the first jaw or frame 7010′ ona second or opposite side 7007 of the center frame axis FA. In suchinstances, the left ramp 7450 of the authentication key 7430 serves tomove the first lockout arm 7310′ from the engaged or locked position tothe disengaged or unlocked position when the cartridge assembly 7500′ isseated into the first jaw of frame 7010′ of the surgical stapling device7002′. A 45 mm surgical stapling device may have the first lockout on aright side of the cartridge axis and a 60 mm surgical stapler may havethe first lockout on a left side of the cartridge axis and visa versa.Or a certain specialty stapling device such as a vascular stapler or athoracic staple may have the lockout on a different side than amultipurpose stapler.

Referring to FIG. 57, an example of a surgical stapling assembly 8000 isshown. The surgical stapling assembly 8000 may be employed in connectionwith the surgical instrument 1010 described above or in connection witha variety of other surgical instruments or robots described in variousdisclosures that have been incorporated by reference herein. Thesurgical stapling assembly 8000 may be employed in connection withelectrically controlled, battery powered manually powered and/or roboticcontrolled surgical instruments in the various forms disclosed in theaforementioned incorporated disclosures. As can be seen in FIG. 57, thesurgical stapling assembly 8000 comprises a surgical stapling devicegenerally designated as 8002 that comprises first jaw or frame 8010 thatis configured to operably support a staple cartridge 4200 therein. Thefirst jaw 8010 is attached to a spine of the shaft assembly of thesurgical instrument or robot in the various manners described herein. Inthe illustrated example, the first jaw 8010 is attached to the spineportion of the shaft assembly (not shown in FIG. 57), by a shaft mountflange 8030 that is pinned by a pin or otherwise attached to a proximalend 8014 of the first jaw 8010. Other methods of attaching and operablyinterfacing the surgical device 8002 with a shaft of a surgicalinstrument may also be employed. For example, the stapling device 8002may be attached to the shaft assembly such that the stapling device(sometimes also referred to as an “end effector”) is not capable ofarticulating relative to the shaft assembly.

Still referring to FIG. 57, the surgical stapling assembly 8000 furthercomprises a firing member assembly 5040 that comprises a knife bar 5042that is attached to a knife member 5050 or “firing member”. The knifebar 5042 also interfaces with corresponding components and firingsystems in the surgical instrument or robot to receive firing motionswhich can distally advance the knife bar 5042 and firing member 5050through a staple firing stroke from a starting position to an endingposition and also retract the knife bar 5042 and firing member 5050proximally to return the firing member 5050 to the starting position. Inthe illustrated arrangement, the firing member 5050 comprises a firingmember body 5052 that supports a cutting edge or knife edge 5053. Thefiring member 5050 further comprises a foot 5054 that is formed on thebottom of the firing member body 5052 and extends laterally from eachside thereof. The firing member 5050 further comprises a pair of toppins or tabs 5056 that extend laterally from the firing member body 5052that are adapted to engage ledges on an anvil as will be discussedfurther herein. Additionally, the firing member 5050 comprises a pair ofcentral pins or tabs 5058 that protrude laterally from each side of thefiring member body 5052. In some of the disclosures incorporated byreference herein, the firing member 5050 may also be referred to as an“E-Beam” firing member or cutting member.

Further to the above, the surgical stapling device 8002 furthercomprises a second jaw or anvil 8100 that is movable relative to thefirst jaw or frame 8010. The anvil 8100 comprises an anvil body 8102 andan anvil mounting portion 8110. The anvil body 8102 comprises a stapleforming undersurface or tissue contacting surface 8104 that has a seriesof staple forming pockets (not shown) formed therein that are arrangedto form corresponding staples as they are driven into forming contacttherewith. The anvil mounting portion 8110 comprises a pair of laterallyextending anvil pins or trunnion pins 8112 that are configured to bereceived in corresponding trunnion holes 8022 in the upstandingsidewalls 8020 of the first jaw or frame 8010. Unlike the anvil 4100described above, the anvil 8100 is pivotally pinned to the frame 8010for pivotal travel relative thereto about a fixed pivot axis. Statedanother way, unlike anvil 4100, anvil 8100 does not materially moveaxially or translate during the anvil closure process.

As discussed above, as well as in several of the disclosures which havebeen incorporated by reference herein, the anvil 8100 may be movablefrom an open position wherein a used or spent staple cartridge mayeither be removed from the first jaw or frame 8010 or an unfired staplecartridge may be operably seated therein to a closed position by anaxially movable closure member or end effector closure tube (not shown).For example, as the closure member is moved distally from a proximalposition, the closure tube may operably engage a cam surface on theanvil mounting portion 8110. Such interaction between the closure memberand the anvil mounting portion 8110 causes the anvil mounting portion8110 and the trunnion pins 8112 to pivot until the closure member movesthe anvil 8100 to a fully closed position. When in the fully closedposition, the staple-forming pockets in the anvil 8100 are properlyaligned with the staples in a corresponding compatible surgical staplecartridge that has been operably seated in the first jaw or frame 8010.When the axially movable closure member is thereafter moved in aproximal direction, the closure member causes the anvil 8100 to pivotback to the open position.

Further to the above, the surgical stapling assembly 8000 furthercomprises a first lockout 8300 that is configured to prevent the firingmember 5050 from moving distally from its proximal-most startingposition when an authorized or compatible staple cartridge is notoperably seated in the first jaw or frame 8010. The first lockout 8300may also be referred to herein as an “authentication” lockout. In theillustrated arrangement, the first lockout 8300 comprises a single,bi-lateral first spring 8310 that is supported in the proximal end 8014of the frame 8010 and attached to the shaft mount flange 8030. In onearrangement for example, the first spring 8310 comprises a first lockoutarm 8312 that is located on one side of the cartridge axis CA and asecond lockout arm 8314 that is located on an opposite side of thecartridge axis CA from the first lockout arm 8312. The first and secondlockout arms 8312, 8314 are attached to a central body portion 8316. SeeFIG. 58. The spring 8310 is mounted in the first jaw or frame 8010 andaffixed to the shaft mount flange 8030 by a pin 8034 that extendsthrough holes 8036 in the shaft mount flange 8030 and through holes 8318in the first lockout arm 8312 and the second lockout arm 8314. The firstlockout arm 8312 and the second lockout arm 8314 each further comprise alockout window or opening 8320 therein that are each adapted to receivetherein the corresponding central pin 5058 protruding from the first andsecond sides of the firing member 5050 when the firing member 5050 is inits proximal-most or starting position. See FIGS. 59 and 61.

FIGS. 59-61 illustrate the first lockout 8300 in the locked positionwherein the central pins 5058 are received within the lockout windows8320 in the first and second lockout arms 8312, 8314. In somearrangements, those staple cartridges that are compatible with thesurgical stapling device 8002 or, stated another way, those staplecartridges that have the proper number, size and arrangement of staples,may have one or more unlocking keys directly formed on the cartridgebody and/or cartridge pan that are configured to defeat the firstlockout when the compatible cartridge is operably seated in the firstjaw or frame. Various cartridges that have unlocking keys protrudingtherefrom are disclosed in various disclosures which have been hereinincorporated by reference. In other instances, however, the clinicianmay wish to use staple cartridges that are otherwise compatible with thesurgical stapling assembly, but otherwise lack the unlocking keys. Insuch instances, the clinician would be unable to otherwise use thosecompatible staple cartridges in the surgical stapling device. Thesurgical stapling assembly 8000 includes features designed to facilitateuse of such compatible staple cartridges that otherwise lack unlockingkey features.

Turning now to FIGS. 51 and 55, the stapling assembly 8000 furthercomprises a retainer 4400 that is configured to be removably coupled tothe staple cartridge 4200. Specific details concerning the retainer 4400were discussed above and will not be repeated here. As indicated above,the retainer 4400 further comprises an authentication key 4430 that isconfigured to defeat the first lockout 4300 when the retainer 4400 isattached to the staple cartridge 4200 and the staple cartridge 4200 hasbeen operably seated in the first jaw or frame 8010. As can be seen inFIG. 11, the authentication key 4430 protrudes proximally from aproximal end 4401 of the top portion 4402 of the retainer 4400 andcomprises a right ramp feature 4440 and a left ramp feature 4450 thatare separated by a space 4460 that is sized to receive the firing memberbody 4052 therebetween. In the illustrated example, the right ramp 4440angles downward from the top portion 4402 of the retainer 4400 andcomprises a proximal right tip 4442. The proximal right tip 4442 definesa first right cam surface 4444 that angles inward at the tip and extendsdistally to a second right cam surface 4446. The second right camsurface 4446 extends from the first right cam surface 4444 to the topportion 4402. See FIG. 12. Similarly, the left ramp 4450 angles downwardfrom the top portion 4402 of the retainer 4400 and comprises a proximalleft tip 4452. The proximal left tip 4452 angles inward at the tip andextends distally to a second left cam surface 4456. The second left camsurface extends from the first left cam surface 4454 to the top portion4402.

Referring now to FIGS. 61 and 62, in use the retainer 4400 is removablyattached to the staple cartridge 4200 to form a cartridge assembly 4500.The cartridge assembly 4500 is then inserted into the first jaw or frame8010 so as to bring the right tip 4442 of the authentication key intocontact with an upstanding unlocking tab 8322 on the first lockout arm8312 and the left tip 4452 into contact with an upstanding unlocking tab8324 on the second lockout arm 8314. During the initial proximalinsertion of the cartridge assembly 4500, the first right cam surface4444 biases the first lockout arm 8312 laterally outward (arrow RL inFIG. 62) and the first left cam surface 4454 biases the second lockoutarm 8314 laterally outward (arrow LL). Further longitudinal advancementof the cartridge assembly 4500 into the first jaw or frame 8010 in aproximal direction causes the first lockout arm 8312 to attain a firstintermediate position wherein the first lockout arm 8312 disengages thecorresponding central pin 5058 on the firing member 5050 and also causesthe second lockout arm 8314 to attain a second intermediate positionwherein the second lockout arm 8314 disengages the corresponding centralpin 5058 on the firing member 5050. Continued longitudinal insertion ofthe cartridge assembly 4500 into the first jaw or frame 8010 in aproximal direction causes the second right cam surface 4446 to furtherbias the first lockout arm 8312 laterally outward and the second leftcam surface 4456 to further bias the second lockout arm 8314 laterallyoutward until the cartridge assembly 4500 is completely operably seatedin the first jaw or frame 8010. See FIG. 63.

When the cartridge assembly 4500 has been operably seated in the firstjaw or frame 5010, a distal first retention tab 8326 on the firstlockout arm 8312 engages a corresponding side of the staple cartridge4200 to retain the first lockout arm 8312 in that unlocked position. Ascan be seen in FIG. 62, a clearance pocket 8021R is provided in thesidewall 8020 to accommodate the first retention tab 8326 in thatposition. Likewise a distal second retention tab 8328 formed on thesecond lockout arm 8314 engages another corresponding side of the staplecartridge 4200 to retain the second lockout arm 8314 in that unlockedposition. A clearance pocket 8021L is provided in the sidewall 8020 toaccommodate the second retention tab 8328 in that position. When in thatposition, the first lockout 8300 is in the unlocked position or, statedanother way, is “defeated”. The user may then remove the retainer 4400from the staple cartridge 4200 in the above-described manner. With thefirst lockout 8300 defeated or unlocked, the firing member 5050 may bedistally advanced from the starting position and is in a “ready state”.

After the staple cartridge 4200 has been fired, the firing member 5050is retracted back to the starting position and the second jaw or anvil8100 is pivoted back to the open position. The spent staple cartridgemay then be removed from the first jaw or frame 8010. Once the spentstaple cartridge 4200 has been removed from the first jaw or frame 8010,the first and second lockout arms 8312, 8314 spring back into engagementwith the corresponding central pins 5058 on the firing member 5050 toonce again retain the firing member 5050 in the starting position. Also,in at least one version, the surgical stapling device 8002 also includesa second lockout 5600 that is configured to prevent the firing member5050 from distally advancing through the staple firing stroke when aspent staple cartridge is seated in the first jaw or frame 8010. Detailsconcerning the operation of the second lockout were provided above andwill not be repeated here.

Further to the above, at least one form of the retainer 4400 may beattached to various staple cartridges that are adapted to be used with(compatible with) different forms of surgical stapling devices. Statedanother way, the retainer 4400 may be used on staple cartridges that canbe seated in different stapling devices to defeat the various lockoutmechanisms of those stapling devices. Staple cartridge 8200 maysimilarly be used with different stapling devices that have differentforms of lockouts. For example, FIG. 64 illustrates a surgical staplingsystem generally designated as 8600 which comprises a first staplingdevice 4002 and at least a second stapling device 8002. The retainer4400 may be coupled to surgical staple cartridges 4200 to form acartridge assembly 4500 that is compatible with one of both of thesurgical stapling devices 4002, 8002. When the retainer 4400 is attachedto a compatible staple cartridge 4200 to form an assembled cartridgearrangement 4500, the assembled cartridge arrangement may be used ineither of the devices 4002, 8002. Likewise, the staple cartridge 4200may also be used in either of the stapling devices 4002, 8002. Surgicalstapling device 4002 employs a translating anvil 4100; stapling device8002 employs a pivoting anvil 8100. These devices offer very differentamounts of space for the authentication key arrangements to operate dueto the different amounts of space required for the anvils of each deviceto move between the open and closed positions. Thus, in variousapplications, the authentication ramp features may need to be rathernarrow and employ staged and vertically displaced camming surfaces inorder to actuate the lockout configurations of both types of staplingdevices.

In connection with another general aspect, the various authenticationkeys and authentication ramps disclosed herein may be mixed and matchedwith retainer body configurations disclosed herein such that oneretainer/authentication key/ramp configuration may be employed withstaple cartridges that can be used in a plurality of stapling devicesdisclosed herein. Such retainer authentication key/ramp configurationsmay be used to defeat a plurality of the lockout systems in thosevarious stapling devices. Stated another way, oneretainer/authentication key/authentication ramp configuration may beemployed to unlock the jaw blocking lockouts and/or the firing memberlockouts on several of the stapling devices disclosed herein.

As discussed herein, the authentication key arrangement may be providedon a detachable retainer, on the cartridge pan, on the cartridge body,on the sled or on another ancillary attached part. These authenticationkeys may be fashioned such that they could defeat the various firstlockout systems of those surgical stapling devices disclosed herein thatemploy a translating jaw arrangement as well as the first lockoutsystems of those surgical stapling devices that employ a jaw arrangementthat is pivotable about a fixed pivot axis. The design of such“universal” authentication keys may be limited and dictated by theamount of available space in such devices when the movable jaw or anvilis in the closed position (for those keys designed to be resident in thedevice throughout the stapling firing operation) as well as in the openposition.

When designing authentication key configurations that may be employed todefeat lockouts in surgical stapling devices that employ a translatingjaw as well lockouts in surgical stapling devices that employ a movablejaw that pivots about a fixed axis, the amount of available space thatis available in each surgical stapling device will necessarily dictate aparticular shape of a “universal” authentication key. Because the jawshapes and travel paths are different in these types of surgicalstapling devices, the amount of available space for the authenticationkeys when the jaws are open and closed differ.

FIGS. 64A-C illustrate an example of an amount of space that isavailable to accommodate an authentication key 4228A of a staplecartridge 4200A, wherein the authentication key feature 4228A formed ona bottom portion of the cartridge pan 4220A and when the staplecartridge 4200A is seated in, for example, a surgical stapling device4002 that has a translating anvil 4100 that is in the closed position.As can be seen in those Figures, a “closed” space envelop 4800 has avertical leg 4800V and a horizontal leg 4800H, wherein when used inconnection with one surgical stapling device: a is approximately 0.16inches, b is approximately 0.14 inches, c is approximately 0.047 inches,d is approximately 0.025 inches, e is approximately 0.04 inches, f isapproximately 0.035 inches, and g is approximately 0.05 inches, forexample. FIGS. 64D-64G illustrate an “open” space envelope 4802 for thestaple cartridge 4200A when the jaws of the surgical stapling device areopen, wherein: h is approximately 0.14 inches, i is approximately 0.26inches, j is approximately 0.17 inches, k is approximately 0.04 inches,L is approximately 0.0.07 inches, and M is approximately 0.03 inches,for example.

FIGS. 64H-J illustrate an example of an amount of space that isavailable to accommodate an authentication key 4228B of another staplecartridge 4200B, wherein the authentication key feature 4228B formed ona bottom portion of the cartridge pan 4220B and when the staplecartridge 4200B is seated in, for example, a surgical stapling device4002 that has a translating anvil 4100 that is in the closed position.As can be seen in those Figures, a “closed” space envelop 4804 has avertical leg 4804V and a horizontal leg 4804H, wherein when used inconnection with one surgical stapling device: n is approximately 0.16inches, o is approximately 0.16 inches, p is approximately 0.14 inches,q is approximately 0.025 inches, r is approximately 0.04 inches, s isapproximately 0.095 inches, t is approximately 0.05 inches, for example.

FIGS. 64K-M illustrate an example of an amount of space that isavailable to accommodate an authentication key 4228C of a staplecartridge 4200C, wherein the authentication key feature 4228C formed ona bottom portion of the cartridge pan 4220C and when the staplecartridge 4200C is seated in, for example, a surgical stapling device4002 that has a translating anvil 4100 that is in the closed position.As can be seen in those Figures, a “closed” space envelop 4806 has avertical leg 4806V and a horizontal leg 4806H, wherein when used inconnection with one surgical stapling device: u is approximately 0.16inches, v is approximately 0.15 inches, w is approximately 0.037 inches,x is approximately 0.025 inches, y is approximately 0.04 inches, z isapproximately 0.095 inches, and aa is approximately 0.06 inches, forexample. FIGS. 64N-Q illustrate an “open” space envelope 4808 for thestaple cartridge 4200C when the jaws of the surgical stapling device areopen, wherein: bb is approximately 0.26 inches, cc is approximately 0.23inches, dd is approximately 0.12 inches, ee is approximately 0.12inches, ff is approximately 0.08 inches, and gg is approximately 0.04inches, for example.

FIGS. 64R-T illustrate an example of an amount of space that isavailable to accommodate an authentication key 4228D of a staplecartridge 4200D, wherein the authentication key feature 4228D formed ona bottom portion of the cartridge pan 4220D and when the staplecartridge 4200D is seated in, for example, a surgical stapling device8002 that has an anvil 8100 that movable between an open and closedposition about a fixed pivot axis. As can be seen in those Figures, a“closed” space envelop 4810 has a vertical leg 4810V and a horizontalleg 4810H, wherein when used in connection with one surgical staplingdevice: hh is approximately 0.16 inches, ii is approximately 0.20inches, jj is approximately 0.047 inches, kk is approximately 0.025inches, 11 is approximately 0.05 inches, mm is approximately 0.025inches, and nn is approximately 0.09 inches, for example. FIGS. 64U-64Xillustrate an “open” space envelope 4812 for the staple cartridge 4200Dwhen the jaws of the surgical stapling device are open, wherein: oo isapproximately 0.09 inches, pp is approximately 0.08 inches, qq isapproximately 0.05 inches, rr is approximately 0.06 inches, ss isapproximately 0.10 inches, and tt is approximately 0.03 inches, and uuis approximately 0.09 inches, for example.

FIGS. 64Y-64ZZ illustrate an example of an amount of space that isavailable to accommodate an authentication key 4228E of a staplecartridge 4200E, wherein the authentication key feature 4228E formed ona bottom portion of the cartridge pan 4220E and when the staplecartridge 4200E is seated in, for example, a surgical stapling device8002 that has an anvil 8100 that movable between an open and closedposition about a fixed pivot axis. As can be seen in those Figures, a“closed” space envelop 4814 has a vertical leg 4814V and a horizontalleg 4814H, wherein when used in connection with one surgical staplingdevice: vv is approximately 0.16 inches, ww is approximately 0.20inches, xx is approximately 0.047 inches, yy is approximately 0.025inches, zz is approximately 0.05 inches, aaa is approximately 0.085inches, and bbb is approximately 0.09 inches, for example.

FIGS. 65-71 illustrate another surgical stapling assembly 9000 that issimilar in many aspects to surgical stapling assembly 7000 discussedabove. The surgical stapling assembly 9000 comprises a surgical staplingdevice 9002 that may be employed in connection with the surgicalinstrument 1010 described above or in connection with a variety of othersurgical instruments and robots described in various disclosures thathave been incorporated by reference herein. As can be seen in FIG. 65,the surgical stapling device 9002 comprises a first jaw or frame 9010that is configured to operably support a staple cartridge 9200 therein.The first jaw or frame 9010 is attached to a spine of the shaft assemblyin the various manners described herein. In the illustrated example, thefirst jaw or frame 9010 is attached to the spine of a shaft assembly(not shown in FIG. 65), by a shaft mount flange 9030. The surgicalstapling device 9002 may also be used in connection with shaftassemblies that do not facilitate articulation of the surgical staplingdevice 9002.

Still referring to FIG. 65, the surgical stapling device 9002 furthercomprises a firing member assembly 4040 that comprises a knife bar (notshown) that is attached to a knife member 4050 or “firing member”.Operation of the firing member 4050 and the knife bar were discussed indetail above and will not be repeated here. The surgical stapling device9002 further comprises a second jaw or anvil 9100 that is movablerelative to the first jaw or frame 9010. The anvil 9100 comprises ananvil body 9102 and an anvil mounting portion 9110. The anvil body 9102comprises a staple forming undersurface or tissue contacting surface9104 that has a series of staple forming pockets (not shown) formedtherein that are arranged to form corresponding staples as they aredriven into forming contact therewith. The anvil mounting portion 9110comprises a pair of laterally extending anvil pins or trunnion pins 9112that are configured to be received in corresponding trunnion holes 9022in the upstanding sidewalls 9020 of the first jaw or frame 9010. Unlikethe anvil 6100 described above, the anvil 9100 is pivotally pinned tothe frame 9010 for pivotal travel relative thereto about a fixed pivotaxis. Stated another way, unlike anvil 6100, anvil 9100 does notmaterially move axially or translate during the anvil closure process.

As discussed above, as well as in several of the disclosures which havebeen incorporated by reference herein, the anvil 9100 may be movablefrom an open position wherein a used or spent staple cartridge mayeither be removed from the first jaw or frame 9010 or an unfired staplecartridge may be operably seated therein to a closed position by anaxially movable closure member or end effector closure tube 9600 (FIG.69). For example, as the closure tube 9600 is moved distally from aproximal position, the closure tube 9600 may operably engage a camsurface 9113 on the anvil mounting portion 9110. Such interactionbetween the closure tube 9600 and the anvil mounting portion 9110 causesthe anvil mounting portion 9110 and the anvil trunnion pins 9112 topivot until the closure member moves the anvil 9100 to a fully closedposition. When in the fully closed position, the staple-forming pocketsin the anvil 9100 are properly aligned with the staples in acorresponding compatible staple cartridge 9200 that has been operablyseated in the first jaw or frame 9010. When the axially movable closuretube 9600 is thereafter moved in a proximal direction, features on theclosure tube 9600 interface with the anvil mounting portion 9110 tocause the anvil 9100 to pivot back to the open position.

Further to the above, the surgical stapling device 9002 comprises afirst lockout 9300 that is configured to prevent the second jaw or anvil9100 from being movable from the open position to the closed position bythe closure tube 9600. The first lockout 9300 may also be referred toherein as an “authentication” lockout. In the illustrated arrangement,the first lockout 9300 comprises a first lockout arm 9310 that ispivotally supported in the first jaw or frame 9010 by a lockout pin 9312that is attached thereto. See FIG. 66. In one example, the first lockoutarm 9310 is fabricated from stainless steel or the like and the lockoutpin 9312 may be machined into the proximal end thereof. The lockout pin9312 is pivotally seated in a pivot hole 9013 in the frame 9010 tofacilitate pivotal travel of the first lockout arm 9310 between a jawlocking position and a jaw closure position. See FIG. 68. In theillustrated example, the first lockout arm 9310 is configured toblockingly engage a lock lug portion 9120 protruding downward from theanvil mounting portion 9110 when the first lockout arm 9310 is thelocked or jaw locking position. See FIG. 69. When the first lockout arm9310 is in that locked or engaged position, pivotal travel of the anvil9100 is prevented when the lock lug portion 9120 contacts the firstlockout arm 9310. It will be appreciated that the first lockout arm9310, as well as the lock lug portion 9120, are each sufficiently robustso as to resist substantial closure motions that applied to the anvil9100 to prevent closure of the anvil 9100.

Referring now to FIG. 66, a first lockout spring 9330 is supported in acorresponding sidewall 9020 of the first jaw or frame 9010 to apply alateral biasing force to the first lockout arm 9310 to bias the firstlockout arm 9310 in the locked direction LD (FIG. 68) to the locked orjaw locking position wherein the first lockout arm 9310 prevents theanvil 9100 from moving from the open position to the closed position. Ascan be seen in FIG. 66, the first lockout arm 9310 further comprises anupstanding cam actuator tab 9322 that is formed on a distal end 9320 ofthe first lockout arm 9310. As can be seen in FIG. 71, the cam actuatortab 9322 comprises an upper actuator cam surface 9324. In addition, alower actuator cam member 9326 is formed on the distal end 9320 of thefirst lockout arm 9310.

In at least one example, the stapling assembly 9000 comprises a staplecartridge 9200 that is identical to staple cartridge 4200 describedabove except that an authentication key 9430 is formed into a cartridgepan 9220. See FIG. 72. The authentication key 9430 is configured todefeat, unlock or unlatch the first lockout 9300 when the staplecartridge 9200 is operably seated in the frame 9010. As can be seen inFIG. 72, the authentication key 9430 protrudes proximally from aproximal end 9221 of the cartridge pan 9220 and comprises an upper rampfeature 9440 and a lower ramp feature 9450 that is vertically displacedfrom the upper ramp feature 9440. The authentication key 9430 is bent ina generally right angle from a portion 9223 of the cartridge pan 9220that extends across a portion of a distal end of the cartridge body9202. The upper ramp feature 9440 comprises an upper ramp tab 9441 thatis bent into the authentication key 9430 and the lower ramp feature 9450comprises a lower ramp tab 9451 that is bent into the authentication key9430. As can be seen in FIG. 72, both the upper ramp feature 9440 andthe lower ramp feature 9450 are located on a same side of a cartridgeaxis CA that is defined by the cartridge body 9202. The upper rampfeature 9440 is formed so that is its also proximal to the lower rampfeature 9450. As indicated above, the upper and lower ramp features9440, 9450 are bent out of the cartridge pan 9220. Stated another way,the upper and lower ramp features 9440, 9450 are integrally formed inthe cartridge pan 9220. In the illustrated example, the upper rampfeature 9440 comprises a first upper cam surface 9442 and a second uppercam surface 9444. The first upper cam surface 9442 is proximal to thesecond upper cam surface and is also angled relative to the second uppercam surface 9444. The lower ramp feature 9450 comprises a first lowercam surface 9452 and a second lower cam surface 9454. The first lowercam surface 9452 is proximal to the second lower cam surface 9454 and isalso angled relative to the first lower cam surface 9452.

FIGS. 73-77 illustrate the interaction between the upper and lower rampfeatures 9440, 9450 of the authentication key 9430 and the upperactuator cam surface 9324 on the cam actuator tab 9322 and the loweractuator cam member 9326. FIG. 73 illustrates the position of theauthentication key 9430 relative to the cam actuator tab 9322 when thestaple cartridge 9200 is initially longitudinally inserted (directionPD) into the frame 9010. As can be seen in FIG. 73, the first upper camsurface 9442 of the upper ramp feature 9440 is in camming engagementwith the upper actuator cam surface 9324 on the cam actuator tab 9322and begins to bias the cam actuator tab 9322, as well as the firstlockout arm 9310 laterally. As can be further seen in FIG. 73, a lockoutpocket 9021 is provided in the adjacent upstanding side wall 9020 of theframe 9010 to accommodate the cam actuator tab 9322 as the first lockoutarm 9310 is moved from the locked or jaw locking position to theunlocked or jaw closure position.

FIG. 74 illustrates the continued longitudinal insertion of the staplecartridge 9200 into the frame 9010 in a proximal direction. As can beseen in FIG. 74, the staple cartridge 9200 has been inserted to a pointwherein the first upper cam surface 9442 has proceeded past the upperactuator cam surface 9324 allowing a tip 9325 of the cam actuator tab9322 to engage the second upper cam surface 9444 on the upper rampfeature 9440 of the authentication key 9430. Such sequential interactioncontinues to move the cam actuator tab 9322 and the first lockout arm9310 laterally to an intermediate position between the locked or jawlocking position and the unlocked or jaw closure position.

FIG. 75 illustrates a position of the staple cartridge 9200 as itcontinues to be longitudinally inserted into the frame 9010 in theproximal direction PD. As can be seen in FIG. 75, the tip 9325 of thecam actuator tab 9322 remains in engagement with the second upper camsurface 9444 on the upper ramp feature 9440 and the lower actuator cammember 9326 has now engaged the first lower cam surface 9452 on thelower ramp feature 9450. This sequential interaction continues to movethe cam actuator tab 9322 as well as the first lockout arm 9310laterally.

FIG. 76 illustrates the position of the actuator tab 9322 after thestaple cartridge 9200 has been operably (fully) seated in the frame9010. As can be seen in FIG. 76, the lower actuator cam member 9326remains engaged with the second lower cam surface 9454 on the lower rampfeature 9450 and has moved the cam actuator tab 9322 laterally to beseated in the lockout pocket 9021 in the upstanding side wall 9020 ofthe frame 9010. When the first lockout arm 9310 is in that unlocked orjaw closure position shown in FIG. 76, the anvil 9100 may be pivotedfrom the open position to the closed position without being blocked bythe first lockout arm 9310. When the first lockout arm 9310 is in thelocked or jaw locking position, the lower actuator cam member 9326 islocated in front of the firing member body 4052 so that the jawunlocking procedure cannot be commenced by distally advancing the firingmember. The lower actuator cam member 9326 is positioned above thecentral pins 4058 of the firing member 4050 to provide adequateclearance therebetween during the unlocking procedure. FIGS. 77 and 78illustrate position of the first lockout arm 6310 relative to a portionof the anvil 9100 after the anvil 9100 has been pivoted to the closedposition.

The surgical stapling device 9002 may further comprise a second lockoutsimilar to second lockout 4600 for preventing the firing member 4050from advancing through the firing stroke when a spent staple cartridgeis seated in the first jaw of frame 9010. The second lockout 4600 wasdescribed in detail above and will not be repeated here.

FIG. 78A illustrates an alternative cartridge assembly 9500 that may beused in connection with the surgical stapling device 9002 in theabove-described manner. In the illustrated example, the cartridgeassembly 9500 comprises a staple cartridge 9200′ that has a retainer a6400″ attached thereto. Retainer 6400″ is similar to retainer 6400described above, except for the shape and configuration of theauthentication key 6430″ and ramp 6440″. The retainer 6400″ may in manyaspects be identical to retainer 6400 discussed above.

Still referring to FIG. 78A, the cartridge assembly 9500 comprises astaple cartridge 9200′ that is similar to staple cartridge 4200described above except that a second authentication ramp 9450′ is formedinto a cartridge pan 9220′ that is attached to the cartridge body 9202′.When the retainer 6400″ is attached to the staple cartridge 9200′ asshown, the ramp 6440″ comprises a “first” ramp that comprises a firstupper cam surface 6442″ and a second upper cam surface 6444″. The firstupper cam surface 6442″ is proximal to the second upper cam surface6444″ and is also angled relative to the second upper cam surface 6444″.The second authentication ramp 9450′ which is located on the cartridgepan 9220′ comprises a first lower cam surface 9452′ and a second lowercam surface 9454′. The second ramp 9450′ is positioned below the firstramp 6440″ on the retainer 6400″ and is positioned distal to the firstupper cam surface 6442″. When the cartridge assembly 9500 is operablyseated into the frame 9010 of the surgical stapling device 9002, thecombination of the first ramp 6440″ on the retainer 6400″ and the secondramp 9450″ on the cartridge pan 9220′ operates in the same manner as theupper ramp feature 9440 and the second ramp feature 9450 on cartridge9200 to sequentially defeat, unlock or unlatch the first lockout 9300 inthe manner described in detail above. Once the first lockout arm 9310has been moved to the unlocked or “jaw closure position”, the secondramp 9450′ retains the first lockout arm 9310 in that position. The usermay then remove the retainer 6400″ from the staple cartridge 9200′ andthe anvil 9100 may be pivoted from the open position to the closedposition.

FIGS. 78B-78C illustrate an alternative staple cartridge 9200″ that issimilar to staple cartridge 9200 described above except that a firstauthentication key 9430″ is formed or molded into the cartridge body9202″. The first authentication key 9430″ comprises a first ramp 9440″that has a first upper cam surface 9442″ and a second upper cam surface9444″ formed thereon. The first upper cam surface 9442″ is proximal tothe second upper cam surface 9444″ and is also angled relative to thesecond upper cam surface 9444″. The second authentication ramp 9450″which comprises a portion of the cartridge pan 9220″ comprises a firstlower cam surface 9452″ and a second lower cam surface 9454″. The secondauthentication ramp 9450″ is located below the first ramp 9440″ and ispositioned distal to the first upper cam surface 9442″. When thecartridge assembly 9200″ is operably seated into the frame 9010 of thesurgical stapling device 9002, the combination of the first ramp 9440″and the second ramp 9450″ operate in the same manner as the upper rampfeature 9440 and the lower ramp features 9450 on cartridge 9200 todefeat the first lockout 9300 in the manner described in detail above.

FIGS. 79-81 depict one form of a retainer 10400 that is configured to beremovably coupled to a staple cartridge 4200 of the type, for example,depicted in FIG. 6. In various embodiments, the retainer 10400 comprisesa top portion 10402 that is coextensive with and configured to bereceived on the deck surface 4204 of the staple cartridge 4200 such thatwhen the retainer 10400 is attached to the cartridge body 4202, theretainer 10400 covers all of the staple pockets 4208 in the cartridgebody 4202. The retainer 10400 may be molded from a polymer material andinclude a plurality of lateral retention features that protrude downwardfrom each lateral side of the retainer 10400. In the illustratedexample, two lateral retainer lug assemblies 10410 are associated withthe general central portion of the retainer 10400. Each lateralretention lug assembly 10410 is molded into a corresponding lateral sideportion of the retainer 10400 such that a retention arm 10412 extendsdownwardly below a bottom surface 10403 of the retainer 10400. In theillustrated example, each retention arm 10412 extends from acorresponding side boss portion 10414 that extends above the top surface10402. Such arrangement serves to provide the retainer lug assembly10410 with sufficient strength while affording each of the retentionarms 10412 the ability to flex slightly outward during attachment of theretainer 10400 to the staple cartridge 4200 and removal of the retainer10400 therefrom. Each retention arm 10412 corresponds to a notch 10405in the bottom surface 10403 of the retainer and comprises a catchfeature 10416 that is molded on the end thereof. The catch features10416 are configured to latchingly engage a corresponding portion of thedeck ledge portion 4205 that is formed on the cartridge body 4202 orother portion of the staple cartridge 4200.

Still referring to FIGS. 79-81, the retainer 10400 may compriseadditional lateral retention features in the form of lateral retainerarms 10480 and 10484 that extend downward from each lateral side of theretainer 10400 and are distal to the lateral retainer lug assemblies10410. Each lateral retainer arm 10480 comprises a catch feature 10482that is formed on an end thereof. Each lateral retainer arm 10484comprises a tab that includes an angled end portion 10486 that isconfigured to engage a corresponding side of the staple cartridge 4200.The retainer 10400 further comprises an angled nose portion 10420 anddistal latch tab 10422. The distal latch tab 10422 comprises an inwardlyextending lip 10424 that is configured to latching engage the distalnose 4203 of the cartridge body 4202.

As can be seen in FIGS. 80 and 81, the retainer 10400 additionallycomprises a proximal keel feature 10470, a central keel feature 10472and a distal keel feature 10474 that are axially aligned with each otherand protrude from the bottom surface 10403 of the retainer body. Theproximal keel feature 10470, the central keel feature 10472 and thedistal keel feature 10474 are configured to be inserted into thelongitudinal slot 4206 in the staple cartridge 4200. The proximal keelfeature 10470, the central keel feature 10472 and the distal keelfeature 10474 serve to ensure that the retainer is properly aligned onthe staple cartridge 4200 to facilitate attachment and detachment of theretainer as well to ensure that the retainer authentication key 10430 isproperly positioned for engagement with unlocking features of a staplingdevice in which the cartridge and retainer assembly are seated. Theproximal keel feature 10470, the central keel feature 10472 and thedistal keel feature 10474 may be sized relative to the longitudinal slot4206 in the cartridge body 42020 to create a frictional fit therewith.In addition, the proximal keel feature 10472 may serve to retain a sledin the staple cartridge in the unfired position.

Also in at least one arrangement, a series of frangible retainer tabsare molded onto the bottom surface of the retainer 10400 between theproximal keel 10470 and the central keel 10472 and between the centralkeel 10472 and the distal keel 10474. More specifically and withreference to FIG. 80, four frangible retention tabs are employed betweenthe proximal keel 10470 and the central keel 10472 and four frangibleretention tabs are employed between the central keel 10472 and thedistal keel 10474. However, other numbers of frangible retention tabsmay be employed. In illustrated example, each series of frangibleretention tabs comprises two right retention tabs 10490R and two leftretention tabs 10490L. Each right retention tab 10490R and each leftretention tab 10490L is attached to the bottom surface 10403 of theretainer 10400 by a corresponding frangible joint 10492 that facilitatesselective removal of the retention tab 10490R, 10490L from the retainer10400. Each right retention tab 10490R is oriented to be inserted intothe longitudinal slot 4206 of the staple cartridge 4200 and hasleftwardly angled bias to frictionally engage a left sidewall of thelongitudinal slot 4206. Each left retention tab 10490L is oriented to beinserted into the longitudinal slot 4206 of the staple cartridge 4200and has a rightwardly angled bias to frictionally engage a rightsidewall of the longitudinal slot 4206. Thus, the right retention tabs10490R and left retention tabs 10490L angle downward in oppositedirections. When the right retention tabs 10490R and left retention tabs10490L are inserted into the longitudinal slot 4206, they frictionallyengage the opposing sidewalls of the slot 4206 to further retaininglyaffix the retainer 10400 to the staple cartridge 4200.

As used in this context, the term “frangible joint” means a joint thatis configured to facilitate detachment of a tab from the body of theretainer. Such joint may comprise an area of reduced cross-section ascompared to the remaining cross-section of the tab/body portion to whichit is attached. In other arrangements, a frangible joint may befabricated from material that has different properties from theproperties of the retainer body material. Such properties may result inthe joint being easily broken by the user. In all of such cases, oncethe frangible joint has been broken and the tab detached from theretainer body, the tab cannot be reattached to the body for reuse by theuser. Such frangible joint/attachment feature arrangements aredistinguishable from other retainer arrangements that employ removableclips or other features that may be reattached to the retainer tofacilitate its reuse.

The retainer 10400 may be removably coupled to the surgical staplecartridge 4200 by engaging the inwardly extending lip 10424 on thedistal latch tab 10422 with the end of the distal nose 4203 and aligningthe retainer 10400 such that the underside of the retainer top 10402confronts the cartridge deck surface 4204 and the proximal keel feature10470, the central keel feature 10472, the distal keel feature 10474,and the frangible retention tabs 10490R, 10490L are aligned with thelongitudinal slot 4206 in the staple cartridge 4200. Thereafter, theretainer 10400 may be pressed toward the staple cartridge 4200 causingthe retainer arms 10412, 10480, 10484 to flex laterally outward and snapinto latching engagement with the corresponding portions of the staplecartridge body 4202. As the retainer 10400 is pressed downward, theangled frangible retention tabs 10490R, 10490L frictionally engage thesidewalls of the longitudinal slot 4206. The retention tabs 10490R,10490L as well as the retainer arms 10412, 10480, 10484 affix theretainer 10400 to the staple cartridge 4200.

The retainer 10400 may be removed from the staple cartridge 4200 byapplying a prying motion to the distal latch tab 10422 and lifting theretainer 10400 upward until the retention tabs 10490R, 10490L and theretainer arms 10412, 10480, 10484 disengage from the cartridge 4200. Inthe illustrated example, the term “LIFT” is molded or embossed into thenose portion 10420 to provide removal instructions to the user. Invarious instances, the retainer 10400 may be reused on another staplecartridge after being cleaned and re-sterilized using conventionalcleaning and sterilization methods that are compatible with the retainermaterial.

The attachment and removal of the retainer as well as there-sterilization may tend to degrade the retainer over time to pointwherein the retainer 10400 may become unreliable. At that point, theretainer 10400 may be discarded for a new retainer. In keeping with suchprocess, the user may remove one or more of the frangible retention tabs10490R, 10490L after each use until all of the frangible retention tabs10490R, 10490L have been removed at which point the retainer 10400should be discarded. See FIG. 81.

In the illustrated example, the retainer 10400 comprises anauthentication key 10430 that is similar in construction and operationas authentication key 6430. The construction and operation ofauthentication key 6430 is described in detail above and will not berepeated here. In alternative configurations, the retainer 10400 may beformed with any one of the various authentication key/authenticationramp arrangements disclosed herein, however.

In certain situations, some retainers are designed to be easilyinstalled onto a compatible staple cartridge as well as removedtherefrom. Many retainers are typically installed by the cartridgemanufacturer, wherein the manufacturer can ensure that the retainer ismatched with a particular staple cartridge that is compatible for usewith a particular stapling device. Once the retainer has been removedfrom the staple cartridge and the staple cartridge has been used, theretainer, as well as the spent staple cartridge, may be discarded. Insome instances, however, the staple cartridge as well as the retainermay be “reprocessed” for reuse in another stapling procedure and/oranother stapling device. It is important for those reprocessing entitiesto install the proper surgical staples as well as the proper number ofsurgical staples into the reprocessed staple cartridge that make thatcartridge compatible with a particular stapling device to ensure thedesired results during use. Further, when using a reprocessed retainer,it is important that the retainer is attached to a staple cartridge thatis compatible or matched with the particular stapling device. If, forexample, a reprocessed retainer is inadvertently attached to a staplecartridge that is incompatible with a particular stapling device andthat cartridge assembly is seated into the device to defeat the variouslockouts therein, the user may then unwittingly fire the device with theimproper cartridge installed. Thus, some of the retainers disclosedherein are designed to be used once or a limited number of times toreduce the chances of their reuse on incompatible or improper staplecartridges.

FIGS. 82-85 depict one form of a retainer 11400 that is configured to beremovably coupled to a staple cartridge 4200 of the type, for example,depicted in FIG. 6. In various embodiments, the retainer 11400 comprisesa top portion 11402 that is coextensive with and configured to bereceived on the deck surface 4204 of a staple cartridge 4200 such thatwhen the retainer 11400 is attached to the cartridge body 4202, theretainer 11400 covers all of the staple pockets 4208 in the cartridgebody 4202. The retainer 11400 may be molded from a polymer material andinclude a plurality of lateral retention features that protrude downwardfrom each lateral side of the retainer 11400. In the illustratedexample, three lateral retainer lug assemblies 11410 are associated witha central portion of the retainer 11400. Each lateral retention lugassembly 11410 is molded into a corresponding lateral side portion ofthe retainer 11400 such that a retention arm 11412 extends downwardlybelow a bottom surface 11403 of the retainer 11400. In the illustratedexample, each retention arm 11412 extends from a corresponding side bossportion 11414. Such arrangement serves to provide the retainer lugassembly 11410 with sufficient strength while affording each of theretention arms 11412 the ability to flex slightly outward duringattachment of the retainer 11400 to the staple cartridge 4200 andremoval of the retainer 11400 therefrom. Each retention arm 11412corresponds to a notch in the bottom surface 11403 and has a catchfeature 11416 molded on the end thereof. The catch features 11416 areconfigured to latchingly engage a corresponding portion of the ledge4205 that is formed on the cartridge body 4202. The cartridge body 4202may be formed with angled surfaces 4011 to facilitate latching of thecatch features under the ledge 4205 as shown in FIG. 84. The catchfeatures 11416 may also be configured to engage other portions of thecartridge body 4202.

Still referring to FIG. 82, the retainer 11400 additionally comprises aproximal keel feature 11470 and a distal keel feature 11474 that areaxially aligned with each other and protrude from the bottom surface11403 of the retainer body. The proximal keel feature 11470 and distalkeel feature 11474 are configured to be inserted into the longitudinalslot 4206 in the staple cartridge 4200. The proximal keel feature 11470and distal keel feature 11474 serve to ensure that the retainer 11400 isproperly aligned on the staple cartridge 4200 to facilitate attachmentand detachment of the retainer 11400 as well to ensure that the retainerauthentication key 11430 is properly positioned for engagement withunlocking features of a stapling device in which the cartridge assemblyis seated. The proximal keel feature 11470 and the distal keel features11474 may be sized relative to the cartridge slot 4206 to establish africtional fit therewith. The proximal keel feature 11470 may also beconfigured to retain a sled in the staple cartridge in an unfiredposition while the retainer 11400 is coupled to the staple cartridge4200.

Also in at least one arrangement, a series of releasable retentionmembers are molded onto the bottom surface between the proximal keel11470 and the distal keel 11474. In the illustrated arrangement, twopairs of right and left releasable retention members are positionedbetween the proximal keel 11470 and the distal keel 11474. Each paircomprises a right releasable retention member 11480R and a leftreleasable retention member 11480L. Each right releasable retentionmember 11480R is molded with a leftwardly angled bias (when viewed fromthe distal end of the retainer) and each left releasable retentionmember 11480L is molded with a rightwardly angled bias. See FIG. 83.Each right releasable retention member 11480R is molded with a rightbottom latch feature 11481R that has a “right” angled surface 11482Rthat terminates in a relatively blunt pointed right end 11483R. A rightcentral lug 11484R is molded relative to each right bottom latch feature11481R to define a space 11485R therebetween that is sized to receive aportion of the cartridge pan 4220 therebetween. Similarly, each leftreleasable retention member 11480L is molded with a left bottom latchfeature 11481L that has a “left” angled surface 11482L that terminatesin a relatively blunt pointed left end 11483L. A left central lug 11484Lis molded relative to each left bottom latch feature 11481L to define aspace 11485L therebetween that is sized to receive a portion of acartridge pan 4220 therebetween.

As can also be seen in FIG. 82, the retainer 11400 further comprises twopairs of retention tabs that are oriented between the pairs of right andleft releasable retention members. Each pair comprises a right retentiontab 11490R and a left retention tab 11490L. Each right retention tab11490R is oriented to be inserted into the longitudinal slot 4206 of thestaple cartridge 4200 and has a leftwardly angled bias to enable theright retention tab 11490R to frictionally engage a left sidewall of thelongitudinal slot 4206. Each left retention tab 11490L is oriented to beinserted into the longitudinal slot 4206 of the staple cartridge 4200and has a rightwardly angled bias to enable the left retention tab11490L to frictionally engage a right sidewall of the longitudinal slot4206. Thus, like the right and left releasable retention members, theright retention tabs 11490R and left retention tabs 11490L angledownward in opposite directions. When the right retention tabs 11490Rand left retention tabs 11490L are inserted into the longitudinal slot4206, they frictionally engage the opposing sidewalls of the cartridgeslot 4206 to further retainingly affix the retainer 11400 to the staplecartridge 4200.

Referring now to FIGS. 82-84, the retainer 11400 may be removablycoupled to the staple cartridge 4200 by engaging the inwardly extendinglip (not shown) that is associated with the distal latch tab 11422 withthe end of the distal nose 4203 and aligning the retainer 11400 suchthat the underside of the top 11402 confronts the cartridge deck surface4204 and the pointed ends 11483R, 11483L of the right and leftreleasable retention members 11480R, 11480L are inserted into thelongitudinal slot 4206 in the staple cartridge 4200. An installationforce “IF” is then applied to the retainer 11400 to press the retainerdownward onto the staple cartridge 4200. The right releasable retentionmembers 11480R and left releasable retention members 11480L, as well asthe right retention tabs 11490R and left retention tabs 11490L slidablyengage the opposing walls 4207L, 4207R of the slot 4206 as the retainer11400 is advanced downwardly onto the cartridge 4200. As illustrated inFIG. 83, each of the catch features 11416 include an angled surface11417 configured to contact the ledge 4205 on the cartridge 4200 andpivot catch feature 11416 laterally outward to snap into engagement withthe ledge 4205. Continued downward advancement of the retainer 11400causes the pointed ends 11483R, 11483L of the right releasable retentionmembers 11480R and left releasable retention members 11480L,respectively to enter a slot 4221 in the cartridge pan 4220 and snapinto engagement therewith such that the cartridge pan 4220 is receivedin the spaces 11485R, 11485L. When the retainer 11400 is attached to thestaple cartridge 4200, the assembly comprises a “cartridge assembly”11500.

FIGS. 84 and 85 illustrate installation of the cartridge assembly 11500into the first jaw or frame 4010 of a stapling device 4002. As can beseen in FIGS. 83 and 85, as the cartridge assembly 11500 is insertedinto the frame 4010 and pushed downwardly therein (arrow IF), the angledsurfaces 11417 on the catch features 11416 slidably contact angledsurfaces 11417 on the frame 4010 and bias the catch features 11416laterally outward (arrows L in FIG. 84) to disengage the catch features11416 from the ledge 4205 on the staple cartridge 4200. Further, theangled surfaces 11482R, 11482L on the right releasable retention members11480R and left releasable retention members 11480L, respectivelycontact the edges of a channel slot 4209 in the bottom of the frame 4010which causes the right releasable retention members 11480R and leftreleasable retention members 11480L to disengage the cartridge pan 4220.The user can then apply a prying force to the distal latch tab 11422 onthe distal end of the retainer 11400 and pry the retainer 11400 off ofthe cartridge 4200 which is now seated in the channel 4010. The distallatch tab 11422 extends distally from an angled nose portion 11420 ofthe retainer 11400. In various arrangements, the right releasableretention members 11480R and left releasable retention members 11480Lare molded with a relatively strong angled bias which makes the retainer11400 difficult to reinstall on another staple cartridge. In theillustrated example, the retainer 11400 comprises an authentication key11430 that is configured to defeat a lockout of the surgical staplingdevice 4002. The retainer 11400 may also be configured for use on otherstaple cartridges that are compatible with any of the surgical staplecartridges disclosed herein. In such instances, the retainer 11400 wouldbe provided with an authentication key 11430 that is compatible with thelockout of the particular surgical stapling device with which it is tobe used.

In various instances, it is desirable for the user to ensure that thestaple cartridge that is being employed in a particular surgicalstapling device is authentic or compatible with the surgical staplingdevice. For example, in many instances those cartridges that aremanufactured by the same manufacturer of the surgical stapling deviceare generally compatible with those stapling devices. To provide theuser with and indication as to the identity of the manufacturer of astaple cartridge 4200, for example, the manufacturer's logo 4260 orsource indicator marking may be provided, for example, on the nose 4203or other portion of the cartridge 4200. Such source indicator markingsmay be applied to each of the components of the surgical stapling deviceas well as each of the components of the staple cartridge and retainer.In the example depicted in FIG. 86, the logo 4260 is embossed onto thenose 4203. In the example depicted in FIG. 87, the logo 4260 is indentedin a portion of the distal nose 4203. FIGS. 88 and 89 illustrate anotherlogo or source indicator marking 4262 that is provided on a distalportion of the cartridge deck 4204. In the example depicted in FIG. 88,the logo 4262 is embossed onto the deck 4204. In the example depicted inFIG. 89, the logo 4262 is indented into the deck 4204. FIG. 90illustrates a nose 4203 of a staple cartridge 4200 that has no sourceindicator markings thereon. FIG. 91 illustrates a nose 4203′ of a staplecartridge 4200 that is provided with a unique shape (that may beassociated with the manufacturer or with a particular type of cartridge)and also has a logo/source indicator 4264 provided on the cartridge deck4204. FIG. 92 illustrates another nose configuration 4203″ of a staplecartridge 4200 that is provided with a unique shape to provide the userwith an indication as to the source of the cartridge.

In various instances, it is also desirable to ensure that the retainerthat is being used in connection with a staple cartridge is authentic orcompatible with that cartridge and surgical stapling device. In theexamples of FIGS. 91 and 92, the underside of the nose portions of thecompatible retainers may be formed with features that mate or match withthe nose configurations 4203′, 4203″ so that when the retainer isattached to those cartridges, the user is provided with an indication asto whether the retainer matches with or, stated another way, iscompatible with those staple cartridges. Another example is depicted inFIG. 93, wherein a frame 11010 of a surgical stapling device 11002 has abottom portion 11262 of a logo or source marking 11260 printed orembossed thereon. The compatible staple cartridge 11200 has a middleportion 11264 of the logo 11260 printed on a side of a deck ledge 11205of the cartridge 11200. The compatible retainer 11400′ has a top portion11266 of the logo 11260 printed or formed thereon. Thus, when assembledtogether as shown in FIG. 93, the markings 11262 on the frame 11010, themarkings 11264 on the staple cartridge 11200, and the markings 11266 onthe retainer 11400′ cooperate to form the complete logo 11260 “ETHICON”or other name or logo to provide the user with confirmation that allthree components came from the same source and are compatible with eachother. FIG. 94 illustrates use of a staple cartridge 11200′ and aretainer 11400″ that may not be compatible with each other and are notcompatible with the stapling device 11202. As can be seen in FIG. 94,the retainer 11400″ and staple cartridge 11200′ do not have the markingsthereon to form the complete logo 11260. The various markings describedabove could be molded into (plastic) components, pad printed laseretched, chemically marked or mechanically machined into thecomponents/parts. The markings may be recessed into or protrude from thesurfaces on which they are located. Such marking may be employed toincrement distance or show a length, for example.

FIGS. 95 and 96 illustrate a retainer 12400 that in many aspects isidentical to retainer 4400 discussed above. The retainer 12400 includesan authentication key assembly 12430 that is removably coupled to theretainer body 12402. The authentication key assembly 12430 comprises akey body portion 12432 and a key ramp 12440 that protrudes proximallyfrom the key body portion 12432. The authentication key assembly 12430may comprise any of the authentication key/ramp arrangements disclosedherein. In at least one arrangement, the authentication key assembly12430 is attached to the retainer body 12402 by a frangible joint 12435that enables the user to detach the authentication key assembly 12430from the retainer body 12402 after use. Thus, once the retainer 12400has been used in the various manners disclosed herein, the retainer12400 is removed from the staple cartridge and the user then detachesthe authentication key assembly 12430 from the retainer body thus makingthe retainer 12400 a “single-use” retainer. In at least one arrangement,a tether 12437 attaches the detached authentication key assembly 12430to the retainer body 12402 to prevent the detached authentication keyassembly 12430 from becoming lost. See FIG. 87. Any of the variousretainer body configurations disclosed herein may be equipped with anauthentication key assembly that is removably coupled thereto by afrangible or otherwise separable joint making the retainer a“single-use” retainer. Such retainer arrangements may or may nototherwise employ frangible retention members/tabs/arms configured toattach the retainer to a staple cartridge and thereafter be removedtherefrom after use.

FIG. 97 illustrates another single use retainer 13400 that, in manyaspects is very similar to retainer 10400 described above. In one ormore locations along a central cross-section of the retainer body 13402,one or more slits 13405 are provided in a bottom surface 13403 of theretainer body 13402. FIG. 98 illustrates a cross-sectional view of aportion of the retainer 13400 (the retention features have been omitted)at the locations indicated in FIG. 97, for example, showing slits 13405.The slits 13405 only extend partially upward into the retainer body13402 such that, during installation of the retainer onto a staplecartridge in the manners disclosed herein to form a cartridge assembly,the retainer body 13402 retains the cross-sectional configuration thatis sufficiently rigid to ensure that the authentication key 13430 isproperly oriented so as to defeat the lockout of the stapling device inwhich the cartridge assembly is seated. However, during the removal ofthe retainer 13400 in the various manners disclosed herein, the slits13405 may sufficiently weaken the retainer body 13402 such that theretainer body 13402 assumes a non-planar configuration illustrated inFIG. 99 or similar non-usable configuration which prevents reuse of theretainer 13400 on another staple cartridge. Any of the various retainerbody configurations disclosed herein may be provided with at least oneslit in the above-described manner to make the retainer a single-useretainer. Further, any of the authentication key arrangements disclosedherein may be employed on the retainer 13400.

FIGS. 100-104 illustrate another retainer assembly 14400 that may beused in connection with a surgical staple cartridge 4200 or othersuitable staple cartridge arrangements. As can be seen in FIG. 101, theretainer assembly 14400 comprises an retainer base 14500 that isconfigured to be removably mounted within a retainer cover 14600. Theretainer base 14500 comprises an internal body 14502 that comprises twosidewalls 14504 that protrude from a retainer nose feature 14503 that isconfigured to be inserted over a nose 4203 of the staple cartridge 4200.The sidewalls 14504 are connected by a proximal bridge 14506 that isconfigured to be seated on a proximal portion of the cartridge deck4204. In addition, an authentication key 14530 extends proximally froman end of the proximal bridge 14506. The authentication key 14530 maycomprise any of the authentication key arrangements disclosed hereindepending upon the particular surgical stapling device with which it isto be employed.

The retainer cover 14600 comprises a cover top 14602 and two coversidewalls 14604 that have a series of cover attachment features orattachment lugs 14606 formed therein to releasably engage the sidewalls14504 of the retainer base 14500. A distal latch tab 14608 is formed ona distal end of the retainer cover 14600 for assisting with the removalof the retainer cover 14600. In use, the retainer cover 14600 may besnapped over the retainer base 14500 such that the attachment lugs 14606latchingly engage an underside of the sidewalls 14504 as shown in FIG.100. When the retainer cover 14600 and retainer base 14500 are coupledtogether, the assembly may be referred to as a “retainer assembly”14700. The retainer assembly 14700 is installed onto the staplecartridge 4200 by inserting the retainer nose feature 14503 over thenose 4203 of the staple cartridge 4200. As can be seen in FIG. 100, akeel 14610 is formed on the underside of the cover top 14602. Keel 14610is oriented and sized to be received within the longitudinal slot 4206in the staple cartridge 4200 when assembled. The keel 14610 may be sizedrelative to the longitudinal slot 4206 to create frictional engagementtherewith. In addition, the keel 14610 may serve to retain the sled inthe unfired position when the retainer assembly 14700 is attached to thestaple cartridge 4200.

When assembled, the retainer cover 14600 completely covers the staplecartridge 4200 and forms a cartridge assembly 14702. See FIG. 104. Insome instances, the cartridge body 4202 of a staple cartridge 4200 ismolded in a particular color to designate a type or size of cartridge.In at least one arrangement, one or more windows 14505 are provided inthe retainer base 14500. Windows 14505 are configured to coincide withcooperating windows 14612 in the retainer cover 14600 to enable the userto view the staple cartridge body 4202 when the retainer assembly 14700is attached to a staple cartridge 4200 or other compatible staplecartridge.

Once the retainer assembly 14700 has been inserted onto the staplecartridge 4200 to form the cartridge assembly 14702, the cartridgeassembly 14702 may then be inserted into the channel of a surgicalstapling device such that contact between the sidewalls of the channeland the attachment lugs 14606 in the cover sidewalls 14604 causes thecover attachment features or attachment lugs 14606 to disengage from theretainer base 14500. Alternatively, the retainer cover 14600 may beremoved from the retainer assembly 14700 prior to installation of thecartridge assembly 14702 in the channel of the surgical stapling deviceby applying a prying motion to the distal latch tab 14608. In eitherevent, after the retainer cover 14600 has been detached, the cartridgeassembly 14702 minus the retainer cover 14600 continues to be insertedinto the channel in the various manners described herein until theauthentication key feature 14530 has defeated, unlocked or unlatched alockout of the surgical stapling device and the cartridge assembly 14702is seated in the channel. As can be seen in FIG. 101, the sidewalls14504 of the retainer base 14500 do not extend to the bottom of thestaple cartridge 4200 such that when the cartridge assembly 14702 isseated in the channel, portions of the staple cartridge sides areexposed to engage portions of the lockout arm of the lockout. The usermay then pull the retainer base 14500 off of the staple cartridge 4200by pulling the retainer base 14500 in a distal direction leaving thestaple cartridge 4200 operably seated in the frame to retain the lockoutin an unlocked or jaw closure position, whichever the case may be.

FIGS. 105-107 illustrate another retainer assembly 15400 that may beused in connection with a surgical staple cartridge 4200 or other staplecartridge configurations. As can be seen in FIG. 106, the retainerassembly 15400 comprises a retainer base 15410 that comprises two bottomsidewalls 15412 that protrude from a retainer nose feature 15414. Theretainer nose feature 15414 is configured to be inserted over a nose4203 of the staple cartridge 4200. The bottom sidewalls 15412 areconnected by a proximal bridge 15416 that is configured to be seated ona proximal portion of the staple cartridge deck 4204. In addition, anauthentication key 15530 extends proximally from an end of the proximalbridge 15416. The authentication key 15530 may comprise any of theauthentication key arrangements disclosed herein. The retainer base15410 is configured to be inserted over the nose 4203 of the staplecartridge 4200. In at least one arrangement, one or more latch lugs15413 may be formed on each sidewall 15412 to engage a ledge 4205 on thecartridge body 4202.

The retainer assembly 15400 further comprises a retainer cover 15600that is removably coupled to the retainer base 15410 by a series offrangible attachment joints 15604. In the illustrated arrangement, theretainer cover 15600 comprises a distal latch tab 15602 and a window15606. The window 15606 is configured to enable the user to view thecartridge body 4202 when the retainer assembly 15400 is attachedthereto. When the retainer assembly 15400 is attached to the staplecartridge 4200, the retainer assembly 15400 covers the entire staplecartridge 4200 and forms a cartridge assembly 15700. The cartridgeassembly 15700 may then be inserted into a frame of a surgical staplingdevice such that contact between a proximal end portion 15608 or otherportions of the retainer cover 15600 and the sidewalls or other portionsof the channel causes the frangible attachment joints 15604 to ruptureto permit the retainer cover 15600 to be detached from the retainer base15410. Alternatively, once the cartridge assembly 15700 has been seatedin the channel of the surgical stapling device, the user may apply aprying motion to the distal latch tab 15602 to cause the frangibleattachment joints 15604 to rupture to permit the retainer cover 15600 tobe removed from the retainer base 15410. See FIG. 107. In either event,after the retainer cover 15600 has been detached, the cartridge/retainerbase assembly continues to be inserted into the channel in the variousmanners described herein until the authentication key feature 15530 hasdefeated a lockout of the surgical stapling device 4002 (or othersurgical stapling device), for example, and the cartridge assembly 15700is seated in the frame 4010. The user may then pull the retainer base15410 off of the staple cartridge 4200 by pulling the retainer base15410 in a distal direction leaving the staple cartridge 4200 operablyseated in the frame 4010 to retain the lockout in an unlocked or jawclosure position, whichever the case may be. Such retainer assembly15400 may be referred to as a “single-use” retainer.

FIG. 108 illustrates another cartridge assembly 16500 that comprises aretainer 16400 that is attached to a staple cartridge 4200. As can beseen in FIG. 108, the retainer 16400 comprises a retainer body 16402that is configured to extend over and cover the cartridge deck 4204. Anauthentication key 16530 is formed on the proximal end of the retainerbody 16402. The authentication key 16530 may comprise any of theauthentication key arrangements disclosed herein depending upon theparticular surgical stapling device to be employed. As can be furtherseen in FIG. 108, a detachment member 16406 is formed on a distal end16404 of the retainer body. The distal end 16404 comprises a noseattachment portion 16408 that hooks over a nose 4203 of the staplecartridge 4200.

In at least one arrangement, after the staples have been loaded into thestaple cartridge 4200 by the manufacturer, the retainer 16400 isinserted over the staple cartridge 4200 in the manner illustrated inFIG. 108 and a lower attachment feature 16410 on the nose attachmentportion 16408 is temporarily attached to the cartridge nose 4203 to formthe cartridge assembly 16500. For example, the lower attachment feature16410 may be “heat staked” or plastic welded to the cartridge nose 4203.In another arrangement, the attachment feature 16410 may be temporarilyattached to the cartridge nose or cartridge body 4202 by an appropriateadhesive that would permit detachment of the retainer 16400 whendesired. In use, after the cartridge assembly 16500 has been seated in aframe 4010 of a surgical stapling device 4002 and the authentication key16530 has defeated a lockout thereof, the user may grasp the detachmentmember 16406 and pull the retainer 16400 in a longitudinally distaldirection DD which causes the joint between the attachment feature 16410and the nose 4203 to sheer or otherwise break to permit the retainer16400 to be removed from the staple cartridge 4200.

In various instances wherein it may be desirable to prevent any of thevarious retainers disclosed herein from being reprocessed/reused, thevarious authentication keys disclosed herein may also be attached to therespective retainer body portion with a joint arrangement that permitsthe authentication key to be unrepairably broken or deformed orrepositioned from a first or proper actuation position to a positionrendering the authentication key unusable to defeat a lockout in asurgical stapling device and without completely detaching theauthentication key from the remaining portion of the retainer. Forexample, FIG. 109 illustrates a retainer 17400 that includes a retainerbody portion 17402 and an authentication key 17430 that is attached to aproximal end 17401 of the retainer body portion 17402 by areconfigurable hinge or joint arrangement 17480. The retainer body 17402may be identical to any of the various retainer body portions disclosedherein and be removably attachable to a staple cartridge 4200 by any ofthe various arrangements disclosed herein. The authentication key 17430may comprise any of the authentication key arrangements disclosed hereindepending upon the particular surgical stapling device to be employed.

FIG. 110A-110B illustrate a reconfigurable joint or hinge arrangement17480 that comprises slits 17482 that are cut into the bottom of theauthentication key 17430. The slits 17482 are of sufficient depth so asto weaken the joint arrangement 17480 to enable the authentication key17430 to be reconfigured to a non-usable position after the retainer17400 has been removed from the staple cartridge 4200 without beingcompletely detached from the retainer body 17402.

FIG. 111 illustrates another reconfigurable joint arrangement thatcomprises a reconfigurable hinge or joint 17480′ that is fabricated froma rapidly degrading polymer material that, after a period of time, wouldenable to the authentication key 17430 to be reconfigured to anon-usable configuration after initial use. In such arrangements, theretainer body 17402 may be fabricated from a first polymer material. Thereconfigurable joint 17480′ may be fabricated from a second polymermaterial such as a hydrolytically-degradable material such aspolyglycolic acid that degrades at a fastener rate from the firstpolymer material. In other arrangements, the second material maycomprise carboxyphennoxy-based polyanhydrides that, when exposed tomoisture during package opening and use, will begin rapid degradation tosufficiently weaken the authentication key joint to prevent reuse. Thematerial properties can be “tuned” based on the initial strength anddegradation speed desired. Further, the geometry and amount ofdegradable polymer material can be altered to increase the degradationeffects (e.g., regions of increased degradable polymer that will permitthe fracturing, but not complete breakage) of the authentication keyshould a reprocessing entity or other user attempt to reuse it. Inalternative arrangements the entire retainer may be fabricated from suchsecond polymer materials. Such material compositions may also beemployed in connection with the various frangible joint arrangementsdescribed in connection with other frangible joint arrangementsdisclosed herein.

FIG. 112 illustrates an authentication key 17430′ wherein a portion17430A of the key 17430′ is fabricated from an increased concentrationof degradable polymer material. FIG. 113 illustrates a cross-sectionthrough an authentication key 17430″ that is fabricated from degradablepolymer material and comprises a hollow truss element 17431″ that aidsin weakening of the authentication key 17430″ during degradation.

FIGS. 114 and 115 illustrate in diagrammatic form, another retainer15400 and authentication key arrangement 15430 that may be reconfiguredto an unusable condition after its initial use. As can be seen in FIG.114, the retainer body 15402 and the authentication key 15430 comprisesa composite structure that comprises a weak center dwelling part 15403that is supported on both sides by stronger thicker pieces 15405. Thecenter dwelling part 15403 is configured with a tortuous path thatallows thin webs 15407 of the stronger material to connect duringmanufacturing to provide structural integrity to the retainer 15400.Those webs 15407 are low strength and are connected with features thatcould hold the retainer 15400 on the staple cartridge during initialuse, but thereafter rupture during removal of the retainer 15400. Insuch instance, closing of the stapling device jaws JA, JB, for example,could be used to assist with the removal of the retainer 15400. See FIG.116. The closing jaws may apply sufficient load/forces to the retainer15400 to cause the retainer to break or deform. The retainer 15400 mayfurther comprise an embedded wire 15409 that serves to attach theauthentication key 15430 to the retainer body 15402 so that should theauthentication key 15430 be broken from the retainer body 15402, it willremain attached thereto by the wire 15409. See FIG. 115.

In still other arrangements, any of the retainer arrangements disclosedherein may be temporarily affixed to an unfired staple cartridge by anappropriate adhesive. The adhesive will affix the retainer to thecartridge body for example, but fracture and permit the retainer to beremoved from the cartridge body by the user.

Turning next to FIGS. 117-121, a retainer 18400 is shown. Retainer 18400is configured to be removably coupled to a staple cartridge 18200 orother staple cartridge that is compatible with a particular surgicalstapling device that comprises a lockout of the various types disclosedherein that prevent the stapling device from operating unless defeated,unlocked or unlatched by an authentication key on the retainer or staplecartridge. In one arrangement, for example, the retainer 18400 may beused with a staple cartridge 18200 that is compatible with a surgicalstapling device 6002. The staple cartridge 18200 comprises a cartridgebody 18204 that includes a longitudinal slot 18206 that is configured toaccommodate a firing member of the surgical stapling device. The staplecartridge 18200 further comprises a series of staple pockets 18208 thatare formed in the cartridge body 18202. The staple pockets 18208 may beformed in offset “lines” located on each side of the longitudinal slot18206. Each staple pocket 18208 may have a staple driver (not shown)associated therewith that supports a surgical staple or fastener (notshown) thereon. In at least one example, the cartridge body 18202 ismolded from a polymer material with the staple pockets 18208 molded ormachined therein. In one arrangement, the staple pockets 18208 also openthrough a bottom of the cartridge body 18202 to facilitate installationof the drivers and fasteners into their respective staple pockets 18208.Once the drivers and fasteners are inserted into their respective staplepockets 18208, a cartridge pan 18220 is attached to the cartridge body18202. In one form, the cartridge pan 18220 is fabricated from a metalmaterial and includes a bottom 18222 that spans across the bottom of thecartridge body 18202. The cartridge pan 18220 also includes twoupstanding sidewalls 18224 that correspond to each side of the cartridgebody 18202. The cartridge pan 18220 may be removably affixed to thecartridge body 18202 by hooks 18226 that are formed on the sidewalls18224 and configured to hookingly engage corresponding portions of thecartridge body 18202.

The retainer 18400 comprises a top portion 18403 that is coextensivewith, and configured to be received on, the deck surface 18204 of thecartridge body 18202. Thus, in at least one configuration, when theretainer 18400 is attached to the cartridge body 18202, the retainer18400 covers all of the staple pockets 18208 in the cartridge body 4202.As such, when the retainer 18400 is attached to the staple cartridge18200, the retainer 18400 may prevent the surgical staples stored withinthe staple pockets 18208 from falling out should the staple cartridge18200 be inverted or turned upside down prior to use. The retainer body18402 may comprise any of the retainer body arrangements disclosedherein so that the retainer 18400 is removably attachable to the staplecartridge 18200. In one arrangement, the retainer 18400 may be moldedfrom a polymer material and include a plurality of retainer lugs 18410that are configured to latchingly engage outwardly extending deck ledgeportions 18205 form on the cartridge body 4202. See FIG. 121. Theretainer 18400 additionally comprises a retainer keel 18470 thatprotrudes from the bottom surface of the retainer body portion 18402 andis oriented to be received within the longitudinal slot 18206 in thesurgical staple cartridge 18200. Retainer keel 18470 may sized relativeto the longitudinal slot 18206 so as to establish a frictional fittherewith. The retainer keel 18470 may also be configured to retain thesled in the cartridge in an unfired position while the retainer 18400 isattached to the cartridge 18200.

In the illustrated example, the retainer 18400 comprises anauthentication key 18430 that is movably supported on the retainer body18402 such that it is movable between a first actuation position and aretracted position. The authentication key 18430 is L-shaped with oneleg 18440 pivotally pinned to the retainer body 18402 and another leg18442 that comprises a ramp feature 18446. The authentication key 18430is supported within a key housing 18450 that is molded or otherwiseattached to a proximal end 18405 of the retainer body 18402. When theauthentication key 18430 is in the actuation position, the leg 18442protrudes proximally out of the key housing 18450 and when theauthentication key 18430 is in the retracted position, theauthentication key 18430 is completely contained within the key housing18450. In another arrangement, when the authentication key 18430 is inthe retracted position, at least the leg 18442 is inoperably receivedwithin the key housing 18450. As can be seen in FIGS. 117 and 118, atorsion spring or other biasing member 18452 is mounted within the keyhousing 18450 to bias the authentication key 18430 into the retractedposition.

FIG. 119 illustrates initial installation of the retainer 18400 onto thestaple cartridge 18200 by the original manufacturer. Duringinstallation, the authentication key 18430 is retained in the actuationposition while the retainer is removably attached to the staplecartridge 18200. An actuation hole 18448 is provided through leg 18442of the actuation key 18430 and is adapted to receive therein a retainerpeg 18209 that protrudes upward from the deck surface 18204. When thenew, unused retainer 18400 is seated onto the unfired cartridge 18200 bythe manufacturer, the retainer peg 18209 is received in the hole 18448in the leg 18442 to retain the authentication key 18430 in the actuationposition. See FIG. 120. When the new retainer 18400 is attached to theunfired staple cartridge 18400, the resulting cartridge assembly 18500may be seated into a frame 6010 of a surgical stapling device 6002 inthe various manners disclosed herein such that the leg 18442 of theauthentication key 18430 defeats, unlocks, unlatches the lockout of thesurgical stapling device 6002. Once the cartridge assembly 18500 hasbeen seated in the frame 6010 of the surgical stapling device 6002 andthe lockout thereof has been defeated, unlocked, unlatched, the user maythen remove the retainer 18400 from the staple cartridge 18200 in thevarious manners disclosed herein. Such action causes the leg 18442 todisengage from the retention peg 18209. When the leg 18442 is removedfrom the retention peg 18209, the torsion spring 18452 causes theauthentication key 18430 to spring into the key housing 18450 to theretracted position wherein the authentication key 18430 may not bere-actuated to the actuated position. Thus, the retainer 18400 is asingle-use retainer and cannot be reused again on another staplecartridge.

FIGS. 122-126 illustrate another retainer 19400 that is configured to beremovably coupled to a staple cartridge 4200 or other staple cartridgethat is compatible with a particular surgical stapling device thatcomprises a lockout of the various types disclosed herein. The retainer19400 comprises a top portion 19403 that is coextensive with, andconfigured to be received on, the deck surface 4204 of the cartridgebody 4202. Thus, in at least one configuration, when the retainer 19400is attached to the cartridge body 4202, the retainer 19400 covers all ofthe staple pockets in the cartridge body 4202. As such, when theretainer 19400 is attached to the staple cartridge 4200, the retainer19400 may prevent the surgical staples stored within the staple pocketsfrom falling out should the staple cartridge 4200 be inverted or turnedupside down prior to use. The retainer body 19402 may comprise any ofthe retainer body arrangements disclosed herein so that the retainer19400 is removably attachable to the staple cartridge 4200. In onearrangement, the retainer 19400 comprises retention tabs or features19480 that are configured to removably engage the staple cartridge 4200.

In the illustrated example, the retainer 19400 comprises anauthentication key 19430 that is movably supported on the retainer body19402 such that it is movable between a first actuation position and aretracted position. The authentication key 19430 is supported for axialmovement within a key housing 19450 that is molded or otherwise attachedto a proximal end 19405 of the retainer body 19402. The authenticationkey 19400 slidably extends through a housing wall 19452 and has a flange19431 formed thereon. A retraction spring 19454 is journaled on theauthentication key 19430 between the housing wall 19452 and the flange19431 to bias the authentication key 19430 distally (direction DD) intothe retracted position. When the authentication key 19400 is in theactuation position, a proximal end 19440 that may have action camsurface(s) 19442 thereon protrudes out of the key housing 19450.

As can be seen in FIGS. 125 and 126, the retainer 19400 furthercomprises a plunger actuator 19500 that is configured to interface withthe authentication key 19430. In the illustrated arrangement, theplunger actuator 19500 comprises an actuator rod 19502 that extendstransversely through the key housing 19450 and is axially movablebetween an installed position and a removal position. A plunger pad19504 is attached to a bottom end of the actuator rod 19502 that isconfigured to engage the deck surface 4204 of the staple cartridge 4200.A plunger button 19506 is attached to a top end of the actuator rod19502 as shown. The actuator rod 19502 further comprises a verticalnotch 19508 that corresponds with a distal end 19435 of theauthentication key 19430. The vertical notch 19508 intersects a throughhole 19510 that extends through the actuator rod 19502.

In use, the retainer 19400 is installed on the staple cartridge 4200 toform a cartridge assembly 19600 that can be seated in a surgicalstapling device of the various types disclosed herein. As can be seen inFIGS. 123 and 124, the distal end 19435 of the authentication key 19430is received in the vertical notch 19508 and the proximal end 19440protrudes proximally out of the key housing 19450. When theauthentication key 19430 is in that actuation position, the proximal endportion 19440 is positioned to interact with a lockout arm of a lockoutof a surgical stapling device in which the cartridge assembly 19600 isseated. Once the cartridge assembly 19600 has been seated in the frameof the surgical stapling device and the authentication key 19430 hasdefeated, unlocked or unlatched the lockout, the user depresses theplunger actuator 19500 toward the staple cartridge 4200. By depressingthe plunger actuator 19500, the plunger actuator causes the retainer19400 to detach from the staple cartridge 4200 and the distal end 19435of the authentication key to ride up the vertical slot 19508 until thedistal end 19435 enters the through hole 19510 in the actuator rod 19502which allows the authentication key 19430 to move distally to theretracted position. See FIG. 125. When in the retracted position, theauthentication key 14430 and, more particularly, the proximal end 19440of the authentication key 19430 is unable to defeat the lockout of thesurgical stapling device. In at least one arrangement, the amount offorce required to detach the retainer 19400 from the staple cartridge4200 is significant enough to result in the permanent deformation of theactuator rod which may prevent the reuse of the retainer 19400.

FIGS. 127-129 illustrate another retainer 20400 that is configured to beremovably coupled to a staple cartridge 4200 or other staple cartridgethat is compatible with a particular surgical stapling device thatcomprises a lockout of the various types disclosed herein. The retainer20400 comprises a retainer body 20402 that includes a top portion 20403that is coextensive with, and configured to be received on, the decksurface 4204 of the cartridge body 4202. Thus, in at least oneconfiguration, when the retainer 20400 is attached to the cartridge body4202, the retainer 20400 covers all of the staple pockets in thecartridge body 4202. As such, when the retainer 20400 is attached to thestaple cartridge 4200, the retainer 20400 may prevent the surgicalstaples stored within the staple pockets from falling out should thestaple cartridge 4200 be inverted or turned upside down prior to use.The retainer body 20402 is removably attachable to the staple cartridge4200. In one arrangement, the retainer 20400 comprises retention tabs orfeatures 20480 that are configured to removably engage the staplecartridge 4200 in the various manners described herein.

As was discussed above, the surgical staple cartridge 4200 comprises asled or camming member 4230 that is configured to be axially advancedthrough the cartridge body 4202 during a staple firing stroke. In a“new”, “fresh” or “unfired” surgical staple cartridge, the sled 4230 isin its proximal-most, “unfired” position. The sled 4230 comprises acentral body portion 4231 that coincides with a longitudinal slot 4206in the cartridge body 4202. The sled 4230 further comprises a pluralityof wedges or cam members 4232 that are configured to drivingly engagethe corresponding lines of staple drivers in the cartridge body 4202.During the staple firing stroke, the firing member of a surgicalstapling device abuts the central body portion 4231 of the sled 4230 andpushes the sled 4230 distally into camming contact with the stapledrivers thereby sequentially driving the staple drivers upward towardthe anvil as the sled 4230 is driven from its unfired position to itsdistal-most, fully fired position within the cartridge body 4202.

As can be seen in FIGS. 127-129, the retainer 20400 comprises anauthentication key assembly 20430 that comprises a first authenticationkey portion 20440 and a second authentication key portion 20450 that areaxially movable relative to each other. The first authentication keyportion 20440 and the second authentication key portion 20450 areslidably supported in a longitudinal pocket 20405 formed in the retainerbody 20402. The first authentication key portion 20440 comprises a firstauthentication ramp portion 20444 on a proximal end 20442 thereof.Similarly, the second authentication key portion 20450 comprises asecond authentication ramp portion 20454 that is formed on a proximalend 20452 thereof.

When the first and second authentication key portions 20440, 20450 areaxially aligned in an actuation position, the first authentication rampportion 20444 and the second authentication ramp portion 20454 cooperateto form an authentication key ramp assembly 20700 that is configured todefeat a lockout of an associated surgical stapling device in thevarious manners described herein. In at least one arrangement, the firstauthentication key portion 20440 further comprises first sled engagementfeatures 20446 that are configured to engage the central body portion4231 of the sled 4230 when the retainer 20400 is attached to the staplecartridge 4200 and the sled 4230 is in the unfired position. Similarly,the second authentication key portion 20450 further comprises secondsled engagement features 20456 that are configured to engage the centralbody portion 4231 of the sled 4230 when the retainer 20400 is attachedto the staple cartridge 4200 and the sled 4230 is in the unfiredposition. In one arrangement, one or more biasing members (not shown)are supported in the retainer body 20402 to bias the first and secondauthentication key portions 20440, 20450 out of the actuation positionunless the first and second sled engagement features 20446, 20456 are inengagement with the central body portion 4231 of an unfired sled 4230 inthe staple cartridge 4200 to which the retainer 20400 is attached.Stated another way, the first and second authentication key portions20440, 20450 are axially misaligned such that the first and second rampportions 20444, 20454 are misaligned and do not form the authenticationkey ramp assembly 20700. See FIG. 127. Other arrangements do not employthe biasing members. As can also be seen in FIGS. 127 and 128, theauthentication key portion 20440 comprises a travel limiter 20448 thatis received within a cavity 20409 in the top portion 20403 of theretainer 20400. Similarly, the authentication key portion 20450comprises a travel limiter 20458 that is also received within the cavity20409. Such arrangement serves to limit the authentication key portions20440, 20450 to a limited amount of axial travel.

In use, the retainer 20400 is aligned above the unfired staple cartridge4200 such that the first and second sled engagement features 20446,20456 are aligned with the longitudinal slot 4206 in the staplecartridge 4200. The retainer 20400 is thereafter pressed onto the staplecartridge 4200 in the manners described herein to form a cartridgeassembly 20800. As the retainer 20400 is attached to the staplecartridge 4200, the first and second sled engagement features 20446,20456 engage the central body portion 4231 of the unfired sled 4230 andmove the first and second authentication key portions 20440, 20450 intothe actuated position. When the cartridge assembly 20800 has been seatedin a frame of a surgical staple cartridge that the retainer 20400 isassociated with, the authentication key ramp assembly 20700 defeats thelockout of the surgical stapling device in the various manners disclosedherein. Once the retainer 20400 is removed from the staple cartridge4200, the first and second sled engagement features 20446, 20456disengage the central body portion 4231 of the sled 4230 and the firstand second authentication key portions 20440, 20450 are moved to amisaligned position.

FIGS. 130 and 131 illustrate another retainer 21400 that comprises aretainer body 21402 that is configured to be removably coupled to astaple cartridge 4200 or other staple cartridge that is compatible witha particular surgical stapling device that comprises a lockout of thevarious types disclosed herein. The retainer body 21402 comprises a topportion 21403 that is coextensive with, and configured to be receivedon, the deck surface 4204 of a cartridge body 4202 of the staplecartridge 4200. Thus, in at least one configuration, when the retainer21400 is attached to the cartridge body 4202, the retainer 21400 coversall of the staple pockets in the cartridge body 4202. As such, when theretainer 21400 is attached to the staple cartridge 4200, the retainer21400 may prevent surgical staples that are stored within the staplepockets from falling out should the staple cartridge 4200 be inverted orturned upside down prior to use. The retainer body 21402 is removablyattachable to the staple cartridge 4200 to form a cartridge assemblythat is configured to be seated in a frame of a surgical staplingdevice. In one arrangement, the retainer 21400 comprises retention tabsor features (not shown) that are configured to removably engage thestaple cartridge 4200 in the various manners described herein.

As can be seen in FIGS. 130-131, the retainer 21400 comprises anauthentication key assembly 21430 that is movably supported in theretainer body 21402 such that it is movable between an actuationposition and a deactivated or retracted position. In the illustratedarrangement, the authentication key assembly 21430 comprises a key body21432 that is slidably supported within the retainer body 21402. Aproximal end 21440 protrudes proximally out of the retainer body 21402.The proximal end 21440 may comprise cam surface(s) 21442 that areconfigured to interface with an upstanding cam actuator arm or actuationtab on a lockout arm of a lockout of a surgical stapling device in whichthe cartridge assembly is seated. As can also be seen in FIG. 130, thekey body 21432 further comprises a series of locking teeth 21434 thatare configured to lockingly interface with pawl teeth 21405 formed inthe retainer body 21402. A removal feature 21436 is formed on a distalend of the key body 21432 as shown.

Prior to installation on the staple cartridge 4200, the authenticationkey assembly 21430 is axially moved into the actuation position whereinthe proximal end portion 21440 is in position to defeat, unlock orunlatch the lockout of the surgical stapling device in which thecartridge assembly is seated. This may be done by the manufacturer whoinstalls the retainer assembly 21400 onto the staple cartridge. Theretainer assembly 21400 is then pressed onto or otherwise removablyattached to the staple cartridge in the various manners disclosedherein. The end user may then seat the cartridge assembly into a frameof a surgical stapling device such that the proximal end 21440 of theauthentication key assembly 21430 defeats, unlocks, unlatches a lockoutof the surgical stapling device in the various manner s disclosedherein. Thereafter, the user may then remove the retainer assembly 21400from the staple cartridge by pulling on the removal feature 21436 andaxially pulling the retainer assembly 21400 in a distal direction. Inaddition to detaching the retainer assembly 21400 from the staplecartridge 4200, such action retracts the authentication key assembly21430 to a retracted position wherein the authentication key assembly21430 is unable to defeat a lockout if the retainer 21400 were to bereattached to another staple cartridge and reseated into a staplingdevice.

In at least one arrangement, the removal feature comprises a hole 21438through which an adjustable wire tie, sometimes referred to as a“zip-tie” may be inserted through and thereafter pulled on. In additionor in an alternative arrangement, a zip-tie may be threaded between oneof the retention tabs and the cartridge body to enable a pulling forceto be applied thereto. Also, in at least one example, the manufacturerof the retainer assembly 21400 initially sets the authentication keyassembly 21430 in the actuation position. The series of locking teeth21434 and the pawl teeth 21405 are “one-way” teeth and only permit theauthentication key assembly 21430 to be retracted in the distaldirection to the retracted position. The teeth 21434, 21405 do notpermit the authentication key assembly 21430 to be moved proximally fromthe retracted position to the actuation position. The series of teethmay also be referred to as a “one-way latch”. Once the authenticationkey assembly 21430 is in the retracted position, it cannot be used todefeat a lockout of a surgical stapling device. Thus, the retainerassembly 21400 is configured to only be used a single time.

FIGS. 132-136 illustrate a staple cartridge retainer system, generallydesigned as 22000. In one form, the system 22000 comprises a retainer22400 that is similar in design to various other retainers disclosedherein. In one example, the retainer 22400, comprises a retainer body22402 that comprises a top portion 22403 that is coextensive with andconfigured to be received on the deck surface 4204 of a staple cartridge4200 such that when the retainer 22400 is attached to the cartridge body4202, the retainer 22400 covers all of the staple pockets 4208 in thecartridge body 4202. The retainer 22400 may be molded from a polymermaterial and include a plurality of lateral retention members thatprotrude downward from each lateral side of the retainer 22400. In theillustrated example, two lateral retainer lug assemblies 22410 areassociated with the general central portion of the retainer 22400. Eachlateral retention lug assembly 22410 is molded into a correspondinglateral side portion of the retainer 22400 such that a retention member22412 extends downwardly below a bottom surface 22405 of the retainer22400. In the illustrated example, each retention member 22412 extendsfrom a corresponding side boss portion 22414. Such arrangement serves toprovide the retainer lug assembly 22410 with sufficient strength whileaffording each of the retention arms 22412 the ability to flex slightlyoutward during attachment of the retainer 22400 to the staple cartridge4200 and removal of the retainer 22400 therefrom. Each retention member22412 comprises a catch feature 22416 that is molded on the end thereof.The catch features 22416 each comprise an angled surface 22417 and areconfigured to latchingly engage a corresponding portion of a ledge 4205formed on the cartridge body 4202 of the staple cartridge 4200.

The retainer 22400 may comprise additional lateral retention features inthe form of lateral retention members 22480 and 22484 that extenddownward from each lateral side of the retainer 22400 and are distal tothe lateral retainer lug assemblies 22410. Each lateral retention member22480 comprises a latch end 22482 configured to engage a correspondingportion of the staple cartridge 4200. Each lateral retention member22484 includes an angled end portion 22486 that is configured to engagea corresponding side of the staple cartridge 4200. The retainer 22400further comprises an angled nose portion 22420 and distal latch tab22422.

As can be seen in FIG. 135, the retainer 22400 additionally comprises aproximal keel feature 22470 and a distal keel feature 22474. Also in atleast one arrangement, a series of central retention tabs are moldedonto the bottom surface 22405 of the retainer 22400 between the proximalkeel 22740 and the distal keel 22474. The central retention tabscomprise alternating right retention tabs 22490R and left retention tabs22490L. Each right retention tab 22490R comprises a pair of catchfeatures 22492R that are configured to extend into a slot 4221 in acartridge pan 4220 that is attached to the staple cartridge 4200 andsnap into engagement therewith. See FIG. 134. Prior to installation,each right retention tab 22490R is in a “first state” with a leftwardlyangled bias that prevents the right retention tab 22490R from beinginsertable into the longitudinal slot 4206. Each right retention tab22490R must be straightened into a “second state” to be insertable intothe longitudinal slot 4206. Each left retention tab 22490L comprises apair of catch features 22492L that are configured to extend through theslot 4221 in the cartridge pan 4220 and snap into engagement therewith.Prior to installation, each left retention tab 22490L is oriented in afirst state with a rightwardly angled bias that prevents the leftretention tab 22490L from being inserted into the longitudinal slot 4206of the staple cartridge 4200. Thus, the right retention tabs 22490R andleft retention tabs 22490L angle downward in opposite directions when intheir respective first states.

In the illustrated example, the right and left retention tabs 22490R,22490L are molded with a significantly strong angled bias into the firststate which prevents their insertion into a longitudinal slot 4206 ofthe staple cartridge 4200 unless they are sufficiently straightened tothe second state during the assembly process. In at least one instance,the retainer system 22000 comprises a retainer tool 22800 that isconfigured to be used to straighten the right and left retention tabs22490R, 22490L (or move the right and left retention tabs 22490R, 22490Lfrom the first state to the second state) during the attachment of theretainer 22400 to the staple cartridge 4200. In one form, the retainertool 22800 comprises an elongated body 22802 that comprises a topportion 22810 and two downwardly depending sidewalls 22820. Thesidewalls 22820 are spaced from each other to accommodate the staplecartridge deck 4204 therebetween. See FIG. 134. The top portion 22810comprises a raised central portion 22812 that has a tool slot 22814. Theraised central portion 22812 coincides with the bottom surface 22405 ofthe retainer body 22402. The tool slot 22814 comprises a wider topportion 22816 that is sized to receive the ends of the right and leftretention tabs 22490R, 22490L therein and a narrower bottom portion22818 that has a width that is similar to or slightly smaller than awidth of the longitudinal slot 4206 in the staple cartridge 4200. Whenthe retainer tool 22800 is removably supported on the staple cartridgedeck 4204, the tool slot 22814 coincides with the longitudinal slot 4206in the staple cartridge 4200. In one arrangement, a small ledge feature22820 is formed on one side of the top portion 22816 of the slot 22814to accommodate initial positioning of the right and left retention tabs22490R, 22490L during the installation process. See FIG. 134.

Referring now to FIG. 132, the retainer 22400 is installed onto thestaple cartridge 4200 by initially placing the retainer tool 22800 ontothe deck 4204 of the staple cartridge 4200 as shown so that the toolslot 22814 is aligned with the longitudinal slot 4206 in the staplecartridge 4200. The retainer 22400 is then placed onto the retainer tool22800 so that the bottom surface 22405 is oriented above the raisedcentral portion 22812 and the ends of the right and left retention tabs22490R, 22490L (while in their respective first states) are received inthe wide portion 22816 of the tool slot 22814. Thereafter, the retainer22400 is pressed downward onto the tool 22800. As the retainer 22400 ispressed downward, an angled surface 22417 on each retention member 22412engages a corresponding tool sidewall 22820 and is flexed outward sothat the catch features 22416 clear the ledge 4205 on the cartridge body4202. Each of the right and left retention tabs 22490R, 22490L areflexed inward to enter the bottom portion 22818 of the tool slot 22814and ultimately enter the longitudinal slot 4206 in the staple cartridge4200 (assume their respective second states). Once the retainer 22400 isin that intermediate installation position, the retainer tool 22800 maybe slid longitudinally out from between the retainer 22400 and thestaple cartridge 4200 by grasping a proximal end of the retainer tool22800 and pulling the tool in a proximal longitudinal direction PD. SeeFIG. 136. Thereafter, the retainer 22400 may continue to be presseddownward into a fully seated position on the cartridge. When in thefully seated position, the catch features 22492R, 22492L extend into theslot 4221 in the cartridge pan 4220 and snap into engagement therewith.Each retention member 22412 is in engagement with the ledge 4205 on thecartridge body 4202 and each of the lateral retainer arms 22480 and22484 are in retaining engagement with corresponding portion so of thestaple cartridge 4200.

Once the retainer 22400 has been attached to the staple cartridge 4200to form a cartridge assembly 22500, the cartridge assembly 22500 maythen be inserted into the frame of a surgical stapling device in thevarious manners disclosed herein. The retainer 22400 further comprisesan authentication key 22430 that is configured to defeat a lockout inthe surgical stapling device into which the cartridge assembly 22500 isseated. As the cartridge assembly 22500 is seated into the frame, theangled surfaces 22417 on the catch features 22416 of the retention arms22412, as well as the angled surface 22483 on each lateral retentionmember 22482 contact sidewalls of the frame which serve to bias thecatch features 22416, 22482 laterally outward out of engagement with theledge 4205 on the cartridge body 4202. Likewise when the catch features22492R, 22492L on the right and left retention tabs 22490R, 22490Lcontact the corresponding sidewalls of a slot in the frame of thesurgical stapling device, the catch features 22492R, 22492L are biasedout of engagement with the cartridge pan 4220. The retainer 22400 maythen be removed by applying a prying motion to the distal latch tab22422 and pulling the retainer 22400 upward off of the staple cartridge4200. In at least some arrangements, the left and right retention tabs22490R, 22490L, as well as the retention arms 22412, are sufficientlyrigid such that when the retainer 22400 has not been attached to thecartridge, it may be very difficult if not impossible to install theretainer 22400 on a staple cartridge 4200 without using the retainertool 22800. In such instances, the retainer may practically comprise asingle-use retainer.

FIGS. 137-139 illustrates another staple cartridge retainer system,generally designed as 22000′ that is similar to system 22000, except forthe retainer tool 22800′. In this arrangement, the retainer tool 22800′comprises a tool body 22802′ that has a downwardly extendingstraightening arm that corresponds to each of the left and rightretention tabs 22490R, 22490L. In the illustrated arrangement, theretainer 22400 comprises three right retention tabs 22490R and two leftretention tabs 22490L. Thus, the retainer tool 22800′ comprises threeright straightening arms 22810R′ and two left straightening arms22810L′. Each of the straightening arms 22810R′, 22810L′ correspond to ahole 22407 in the top portion 22403 of the retainer 22400. See FIG. 138.

To install the retainer 22400 onto the staple cartridge 4200, thestraightening arms 22810R′, 22810L′ are inserted into the correspondingholes 22407 in the top portion 22403 of the retainer 22400 and intoengagement with the corresponding left and right retention tabs 22490R,22490L. The straightening arms 22810R′ engage the corresponding rightretention tabs 22490R and bias them into a relatively straight insertionposition wherein they are insertable into the slot 4206 in the staplecartridge 4200. Likewise the straightening arms 22810L′ engage thecorresponding left retention tabs 22490L and bias them into a relativelystraight insertion position in which they are insertable into the slot4206 in the staple cartridge 4200. Once the retainer tool 22800′ hasbeen inserted into the retainer 22400, the retainer may then be pressedonto the staple cartridge 4200. Thereafter the tool 22800′ may beremoved from the retainer by pulling it in an upward direction off ofthe retainer 22400 to thereby permit the catch features on the left andright retention tabs 22490L, 22490R to engage the edges of the slot 4221in the cartridge pan 4220.

FIGS. 140 and 141 depict a portion of another retainer 23400 that may beidentical to or similar to any of the retainers disclosed herein, exceptfor the following differences. In particular, the retainer 23400comprises a retainer body 23402 that comprises a top portion 23403. Acentral keel assembly 23470 extends from an underside 23405 of the topportion and configured to be received within a longitudinal slot in acartridge body of a staple cartridge. In the illustrated arrangement,the keel assembly 23470 comprises two axially aligned primary keelportions 23472, 23474 and two movable retention flaps 23476, 23478 thatare biased out of plane or axial alignment with the primary keelportions 23472, 23474. The primary keel portions 23472, 23474 areaxially aligned on a retainer axis RA. The movable retention flaps23476, 23478 are biased to a first state wherein they lie on oppositessides of the retainer axis RA. See FIG. 141. To install the retainer23400 onto the staple cartridge 4200, the keel assembly 23470 is alignedwith the slot in the staple cartridge and the two movable retentionflaps 23476, 23478 are biased into plane (second state) as the keelassembly 23470 is pressed into the slot 4206 of the staple cartridge4200. The retainer 23400 also includes an authentication key assembly23430 that may comprise any of the various authentication keyarrangements disclosed herein.

FIGS. 142-147 depict another single use retainer 24400 that may beemployed in connection with a staple cartridge 4200 that is compatiblewith use with a surgical stapling device 6002. Surgical stapling device6002 was described in detail above. In the illustrated example, theretainer 24400 comprises a retainer body 24402 that comprises a planartop portion 24410. A nose pocket 24414 is formed on a distal end 24412of the top portion 24410. The nose pocket 24414 is configured to behooked over a distal nose 4203 of a staple cartridge 4200. The topportion 24410 is sized relative to the staple cartridge 4200 such thatthe top portion 24410 is coextensive with and configured to be receivedon a deck surface 4204 of the staple cartridge 4200 or other suitablestaple cartridge such that when the retainer 24400 is attached to thecartridge body 4202, the retainer 24400 covers all of the staple pockets4208 in the cartridge body 4202. The retainer 24400 may be molded from apolymer material and include a lateral retention feature 24420 thatprotrudes downward from each lateral side of the retainer top portion24410. Each lateral retention feature 24420 is configured to retaininglyengage a ledge portion 4205 of the staple cartridge body 4202. See FIG.144.

In the illustrated arrangement, the retainer 24400 further includes aretainer detachment member 24430 that is attached to a proximal end22416 of the top portion 24410 by a living hinge 24432. Anauthentication key 24440 is formed on the retainer detachment member24430 and is configured to defeat a lockout 6300 of a surgical staplingdevice 6002 or other lockouts of other surgical stapling devicesdisclosed herein. The retainer detachment member 24430 further comprisesat least one ejector post or one-way tab feature 24434 that protrudesfrom a bottom surface of the retainer actuator 24430. In at least onearrangement, an ejector post or one-way tab feature 24434 is formedadjacent each lateral side of the retainer actuator 24430. Each ejectorpost or one-way tab feature 24434 corresponds with a hole 24418 in theretainer top portion 24410.

The retainer 22400 may be installed onto the staple cartridge 4200 withthe retainer detachment member 24430 in a first unactuated position. Theretainer 24400 is installed by hooking the nose pocket 24414 over thenose 4203 of the staple cartridge 4200 and pressing the top portion24410 downward onto a deck surface 4204 of the staple cartridge 4200until the lateral retention features 24420 retainingly engage the ledges4205 of the cartridge body 4202. The retainer 24400 and the staplecartridge 4200 now form a cartridge assembly 24500. The cartridgeassembly 24500 may then be inserted into the frame 6010 of the surgicalstapling device 6002 such that the authentication key 24440 of theretainer engages the actuator cam arm 6322 of the first lockout arm 6310in the surgical stapling device 6002 to defeat the lockout 6300 whilethe retainer detachment member 24430 is in the first unactuatedposition. FIG. 145 illustrates the retainer detachment member 24430 (insolid lines) in the first unactuated position. As can be seen in FIG.145, the authentication key 24440 has engaged the actuator cam arm 6322.FIG. 146 also illustrates the authentication key 24440 in engagementwith the actuator cam arm 6322 during the initial insertion of thecartridge assembly 24500 into the frame 6010. FIG. 147 illustrates thecartridge assembly 24500 operably seated into the frame 6010 wherein theauthentication key 24440 has pivoted the first lockout arm 6310 into thejaw closure position to thereby defeat the lockout 6300 of the staplingdevice 6002. Thereafter, the user may press the retainer detachmentmember 24430 toward the retainer top portion 24410 to a second actuatedposition wherein the one-way tab features 24434 pass through the holes24418 in the retainer top portion 24410. When the one-way tab features24434 pass through the holes 24418, they engage the deck surface 4204 ofthe staple cartridge 4200 and cause the lateral retention features 24420to disengage from the deck ledge portions 4205. When the retainerdetachment member 24430 is pivoted to the second or actuated position,the authentication key 24440 disengages from the actuator cam arm 6322of the first lockout arm 6310 of the surgical stapling device 6002, butthe staple cartridge 4200 retains the lockout 6300 in the defeated orunlocked position. The retainer 24400 may now be removed from the staplecartridge 4200 that is seated in the frame 6010. In the illustratedarrangement, once the one-way tab features 24434 are pressed through thecorresponding holes 24418 in the top portion 24410 they cannot pass backthrough the holes 24418 and thereby retain the retainer detachmentmember 24430 in the second or actuated position. Because theauthentication key 24440 is unable to defeat a lockout of a surgicalstapling device when the retainer detachment member 24430 is in thesecond or actuated position (shown in broken lines in FIG. 145) andbecause the retainer detachment member 24430 is retained in the secondor actuated position by the one-way tab features 24434, the retainer24400 cannot be used again on another staple cartridge. To furtherrender the retainer 24400 un-reusable, a user may sever the living hinge24432 after initial use of the retainer 24400.

FIG. 148 illustrates another retainer 25400 that may be employed with astaple cartridge 4200. The retainer 24500 may be similar to any of thevarious retainers disclosed herein and comprise a cartridge removalfeature 25600 on a distal end thereof. Stated another way, any of thevarious retainer arrangements disclosed herein may additionally beformed with a cartridge removal feature 25600. In one example, thecartridge removal feature 25600 comprises a pry bar portion 25602 thatis integrally formed on a distal end of a top portion 25403 of theretainer 25400. The pry bar portion 25602 extends distally beyond theangled nose portion 25420 of the retainer to form a nose pocket 25610therebetween. A downwardly extending pry arm 25604 is formed on a distalend of the pry bar portion 25602.

The retainer 25400 is attached to a staple cartridge 4200 in the variousmanners disclosed herein to form a cartridge assembly. The cartridgeassembly is then seated in a frame of a surgical stapling device suchthat the authentication key 25430 of the retainer 25400 defeats alockout thereof in any of the various manners disclosed herein. Theretainer 25400 is then detached from the staple cartridge 4200 and thestapling device is used to fire the staples in the staple cartridge4200. Once the staple cartridge has been fired, the user may employ thecartridge removal features 25600 to remove the spent staple cartridge4200S from the frame 25010 of the stapling device. As can be seen inFIG. 148, the nose 4203 of the spent staple cartridge 4200S protrudesdistally out of the frame 25010. The user manipulates the retainer 25400to engage the nose 4203 of the spent staple cartridge in the nose pocket25610 and the pry arm 25604 is inserted into a distal portion of alongitudinal slot in the spent staple cartridge 4200S. Thereafter theuser applies a removal force RF to a proximal end of the retainer 25400to apply a prying force to the cartridge nose 4203 and cause the spentstaple cartridge 4200S to pop out of the frame 25010. Such arrangementprovides an improved mechanical advantage for removing a spent cartridgefrom a surgical stapling device and may be sued to remove spentcartridges from any of the surgical stapling devices disclosed herein.

FIGS. 149-156 illustrate a deactivator tool 26000 that may be used todefeat a lockout of a surgical stapling device. The deactivator 26000may be configured to be used with any of the various surgical staplingdevices disclosed herein to defeat the first lockout thereof, whether itbe a lockout that prevents the closure of one of the jaws or a lockoutthat prevents the distal movement of a firing member from a startingposition within the surgical stapling device. FIGS. 150-156 illustrateuse of the deactivator tool 26000 in connection with a surgical device6002 that was described in detail above. Details concerning the specificconstruction and operation of surgical stapling device 6002 wereprovided above and will not be repeated here beyond what is necessary tounderstand the use of the deactivator tool 26000. As can be seen in FIG.149, in one form, the deactivator tool 26000 comprises a tool body 26002that is designed to removably mate with one of the first and second jawsof the surgical stapling device 6002. In the illustrated example, thetool body 26002 comprises a passage 26004 that is sized to receive oneof the jaws therethrough. In the illustrated arrangement, the passage26004 is sized and shaped to slidably receive the anvil 6100 of thestapling device 6002 therethrough. Tool 26000 further comprises aproximally extending authentication key arm 26010 that has anauthentication key ramp 26020 formed on a proximal end thereof. In thisarrangement, the authentication key ramp 26020 has a single angled camsurface 26022 formed thereon. Other tool arrangements may have differentramp arrangements and cam surface(s) that are specifically configured toactuate features/cam surface(s) on the lockouts of other surgicalstapling devices. Also in the illustrated arrangement, theauthentication key arm 26010 has a stepped portion 26012 thatfacilitates alignment of the authentication key ramp 26020 with theactuator cam arm 6322 of the lockout arm 6310 of the lockout 6300. Otherversions of the tool 26000 may have multiple steps/offsets and otherversions may have no steps/offsets.

FIG. 150 illustrates an initial installation of the tool 26000 onto ananvil 6100 that is in an open position and before the user has seated anunfired staple cartridge into the frame 6010. When in this state, thelockout 6300 is in a locked position. In this case, wherein the lockout6300 is designed to prevent the anvil 6100 from moving from the openposition to a closed position, the locked position may also be referredto herein as the “jaw locking position”. In use, the tool 26000 is movedproximally on the anvil 6100 to bring the cam surface 26022 on the keyramp 26020 into contact with the upstanding actuator cam arm 6322 on thefirst lockout arm 6310 of the device 6002. See FIGS. 151 and 152. FIG.153 illustrates a position of the tool 26000 in a proximal-most“deactivation” position wherein the cam surface 26022 has proceededproximally past the actuator cam arm 6322 and the actuator cam arm 6322and the first lockout arm 6310 have now been moved into an unlockedposition or, in this example, the “jaw closure” position. At this point,the staple cartridge 4200 may be seated into the frame 6010 so that theproximal end of the staple cartridge 4200, when seated in the frame6010, retains the first lockout arm 6310 in the locked or jaw closureposition. See FIGS. 154-156. As was discussed above, when the firstlockout arm 6310 is in the unlocked or jaw closure position, theretention tab 6326 on the first lockout arm 6310 is received within thetab window 6024 that is provided in a frame sidewall 6020. Once thestaple cartridge 4200 has been seated in the frame 6010, the deactivatortool 26000 may be removed from the anvil 6100.

FIG. 157 illustrates use of a deactivator insert 26100 that may beemployed to defeat a lockout of a surgical stapling device. Thedeactivator insert 26100 may be configured to be used with any of thevarious surgical stapling devices disclosed herein to defeat the firstlockout thereof, whether it be a lockout that prevents the closure ofone of the jaws or a lockout that prevents the distal movement of afiring member from a starting position within the surgical staplingdevice. FIG. 157 illustrates use of the deactivator insert 26100 inconnection with a surgical device 6002A that is substantially identicalto surgical device 6002 that was described in detail above. The onlysignificant difference between stapling device 6002A and 6002, is thatstapling device 6002A employs a spring plate 4070 of the type employedin surgical stapling device 4002 described above in place of the travellimiting or mounting plate 6070 that is employed in stapling device6002. In addition, a distal end 6311A of a first lockout arm 6310A isslightly different from the distal end 6311 of the first lockout arm6310 in surgical stapling device 6002. For example, as can be seen inFIG. 157, the distal end 6311A the first lockout arm 6310A comprises anangled member 6317A that is attached to the first lockout arm 6310A. Anactuator cam member 6322A extends upward from the angle member 6317A.One leg 6319A extends inwardly past the actuator cam member 6322A andanother leg of the angled member comprises a retention tab 6326A.Otherwise, device 6002A operates in a similar manner as device 6002.Details concerning the specific construction and operation of surgicalstapling device 6002 were provided above and will not be repeated herebeyond what is necessary to understand the use of the deactivator insert26100.

As shown in FIG. 157, surgical stapling device 6002A comprises a firingmember 4050 of the type described above that is attached to a knife bar4042. The knife bar 4042, which may comprise a solid or laminatedstructure, comprises a spring tab 4044 that is configured to operablyinterface with the spring plate 4070 that is mounted in the bottom ofthe first jaw or frame 6010. The spring plate 4070 is provided with ahole 4072 that is configured to receive the spring tab 4044 therein whenthe firing member 4050 is in its proximal-most, “starting” position. Thespring tab 4044 and the spring plate 4070 cooperate to cause the firingmember 4050 to dive downward into abutting contact with a blockingfeature in the frame (not shown) unless the firing member 4050 is inengagement with a sled in a staple cartridge that is in an unfiredstate. Such arrangement was discussed in detail above and comprises asecond lockout to prevent the firing member from being distally movablethrough a staple firing stroke when a spent cartridge is loaded in thedevice 6002A.

As can be seen in FIG. 157, the deactivator insert 26100 comprises alocking tail 26102 that has a proximal catch 26104 formed thereon thatis configured to hookingly engage an edge of the hole 4072 in the springplate 4070 as shown. The insert 26100 may be fabricated from metal andcomprise a lockout arm blocking feature 26106 that is bent into a distalend of the insert 26100 such that an insert passage 26108 extendstherethrough. When the insert 26100 is mounted in a deactivationposition shown in FIG. 157, the lockout arm blocking feature 26106biases the first lockout arm 6310A into the unlocked or jaw closureposition to defeat the lockout 6300.

FIGS. 158-160 illustrate use of an installation tool 26120 that may beused to install the insert 26100 into the deactivation position when theanvil is in the open position and the first lockout arm 6310A is in thelocked or jaw locking position. In one arrangement, the installationtool 26120 comprises a tool body 26122 that may be held in the hand andmanually manipulated. In other arrangements, the tool 26120 may beconfigured to mate with one of the jaws or other portion of the surgicalstapling device. The tool 26120 further includes a mounting feature26124 that protrudes from the body 26122 and is configured to slidablyextend into the passage 26108 in the lockout arm blocking feature 26106of the insert 26100. In the illustrated example, two mounting features26124 are shown. The second mounting feature 26124 may be employed toinstall an insert 26100 on an opposing side of a frame axis FA, when thefirst lockout arm 6310A of the surgical stapling device is mounted on anopposing side of the frame axis.

Still referring to FIGS. 158-160, the installation tool 26120 furthercomprises a proximal support arm 26126 that has a catch feature 26128that is configured to releasably support the proximal catch 26104 on theinsert locking tail 26102. FIG. 158 illustrates the deactivator insert26100 mounted on the installation tool 26120. With the jaws of thedevice 6002A in an open position, the tool 26120 and deactivator insert26100 are proximally advanced into the device 6002A until the proximalcatch 26104 on the locking tail 26102 is dropped into engagement withthe hole 4072 in the spring plate 4070. During the installation process,the tool and the insert pass between the leg 6139A of the angled member6317A and the firing member 4050 and serve to bias the first lockout arm6310A into the unlocked or jaw closure position. Once the deactivatorinsert 26100 is in the deactivation position wherein the catch 26104 isin the hole 4072 in the spring plate 4070, the user can then retract thetool 26120 in a distal direction leaving the insert in position toretain the first lockout arm 6310 in the unlocked or jaw closureposition wherein the anvil or second jaw may be moved from an open to aclosed position. Other deactivator inserts may be employed in similarmanners to defeat lockouts of the types disclosed herein that preventthe firing member from moving from a starting position.

FIG. 161 illustrates another form of deactivator insert 26200 that maybe used to retain the lockout arm 6310 in the unlocked or jaw closureposition. In one arrangement, deactivator insert 26200 is pressed intothe opening 6024 in the sidewall 6020 of the frame 6010 to frictionallyengage the retention tab 6326 and or the actuator cam arm 6322 of thefirst lockout arm 6310 to retain the lockout arm 6310 in the unlocked orjaw closure position. In at least some applications, the opening 6024may need to be enlarged somewhat to accommodate the deactivator insert26200 between the retention tab 6326 and the edge of the enlargedopening 6024. FIG. 162 depicts a handheld installation tool 26220 thatmay be manually inserted into contact with the actuator cam arm 6322 tobias the lockout arm 6310 into the unlocked or jaw closure position, sothat the deactivator insert 26200 may be wedged or otherwise installedin position. See also FIG. 163.

FIG. 164 illustrates another installation tool 26400 for installing adeactivator insert 26300 in a position wherein the insert 26300 biasesthe lockout arm 6310 into the unlocked or jaw closure position. In theillustrated arrangement, the installation tool 26400 comprises amagazine leg 26410 and an injector leg 26420 that are pivotally coupledtogether. The tool 26400 is configured to be inserted into the frame6010 from a distal end thereof to bring the magazine leg 26410 into adeactivation position wherein a proximal end 26412 of the magazine leg26410 has biased the lockout arm 6310A into the unlocked or jaw closureposition. The magazine leg 26410 comprises a spring-loaded magazine26414 that contains a plurality of deactivator inserts 26300 therein.Once the user has maneuvered the proximal end 26412 of the magazine leg26410 into position, the injector leg 26420 is pivoted toward themagazine leg 26410 to inject the proximal-most insert 26300 into adeactivation position within the frame. The spring-loaded magazine 26414than advances a next insert 26300 in line into an injection position forinstallation in another surgical stapling device. The deactivator insert26300 biases the distal end 6311A of the lockout arm 6310A in theunlocked position or jaw closure position and may be retained in thatposition between a portion of the frame and/or the firing member. Oncethe deactivator insert 26300 has been installed, the user may thenwithdraw the installation tool 26400 and install a staple cartridge intothe frame 6010. In an alternative arrangement, the user uses theinstallation tool 26400 to manually bias the first lockout arm 6310 intothe unlocked or jaw closure position in the above-described manner. Whenin the unlocked or jaw closure position, the retention tab 6326 on thefirst lockout arm 6310 is received in the opening 6024 in the sidewall6020 of the frame 6010. In the arrangement depicted in FIG. 165, adeactivator member 26500 in the form of a piece of adhesive tape 26502is placed over the retention tab 6326 and onto the adjacent portions ofthe sidewall 6020 to retain the retention tab 6326 in the opening 6024and the first lockout arm 6310 in the unlocked or jaw closure position.In another arrangement, a deactivator member 26510 comprises a piece ofadhesive tape 26512 that is attached to a magnet member 26514 that isconfigured to magnetically engage the retention tab 6326 and retain theretention tab 6326 in the opening 6024 when the adhesive tape 26512 isattached onto the adjacent portions of the sidewall 6020. See FIG. 166.In both instances, the deactivator members 26500, 26510 may notinterfere with the closing of the anvil 6100.

FIG. 167 illustrates a deactivator tool 26600 that may be used totemporarily bias the first lockout arm 6310 into the unlocked or jawclosure position and retain the first lockout arm 6310 in that positionuntil a staple cartridge is inserted into the frame 6010 to retain thelockout arm 6310 in the unlocked or jaw closure position. In theillustrated arrangement, the deactivator tool 26600 comprises a C-shapedbody portion 26602 that has two spaced legs 26604, 26606 that areconfigured to receive a portion of the frame 6010 therebetween as shown.The deactivator tool 26600 further comprises a spring-biased plungerassembly 26610 that is operably attached to the leg 26606 and is biasedinto the lateral position L by spring 26612. A magnet 26614 is attachedto the spring-biased plunger assembly 26610 and is adapted tomagnetically engage the retention tab 6326 and retain the retention tab6326 in the window 6024 in the frame 6010 until the staple cartridge isinserted into the frame 6010 to retain the first lockout arm 6310 in theunlocked or jaw closure position. Thereafter, the tool 26600 may beremoved from the frame 6010. In alternative arrangements, an end of thespring biased plunger assembly 26610 may be attachable to the retentiontab 6326 with adhesive, wax, surface tension, suction, etc.

To ensure that the cartridge configurations of the types disclosedherein that have authentication keys integrally formed thereon as wellas those cartridge assemblies that have a retainer attached thereto thatincludes an authentication key feature thereon, are properly alignedwith the various lockout components in a stapling device, variousstapling device embodiments may be equipped with alignment features toaid in the proper mating of the cartridge or cartridge assembly to thedevice. For example, FIG. 168 depicts a channel ledge 27000 that may beprovided on both sidewalls of the various frames 4010, 5010, 6010, 7010,8010, 9010 disclosed herein of the devices disclosed herein to limit thecartridge/cartridge assembly insertion ranges and to properly align thecartridge/cartridge assembly in frame. These channel ledges 27000 may beprovided on the top portions of each frame sidewall and be formed ormachined therein or otherwise attached thereto. To accommodate suchchannel ledges 27000, a relief area 27002 may need to be provided in thecorresponding anvils 4100, 5100, 6100, 7100, 8100, 9100. See FIG. 169.

FIGS. 170-172 depict portions of surgical stapling device 6002A that wasdescribed above. As can be seen in FIGS. 170 and 171, the device 6002Acomprises a first lockout arm 6310A that is pivotally supported in aframe 6010 of the device 6002A and is movable between a locked or jawlocking position (FIG. 170) to an unlocked or jaw closure position inthe various manners disclosed herein. When the first lockout arm 6310Ais in the unlocked or jaw closure position, the second jaw or anvil ofthe device 6002 is movable from an open position to a close position. Ascan be seen in FIG. 172, a distal end 6311A the first lockout arm 6310Acomprises an angled member 6317A that is attached to the first lockoutarm 6310A. An actuator cam member 6322A extends upward from the anglemember 6317A. One leg 6319A extends inwardly past the actuator cammember 6322A and another leg of the angled member comprises a retentiontab 6326A. The actuator cam member 6322A may also be referred to hereinas a primary lockout feature 6322A and retention tab 6326A may also bereferred to herein as a secondary lockout feature 6326A that isconfigured to be received within a corresponding tab window 6024 in aframe sidewall 6020 when the first lockout arm 6310A is in the unlockedor jaw closure position. The primary lockout feature 6326A may also bereferred to as a “first portion” of the first lockout arm 6310A and thesecondary lockout feature 6026A may also be referred to herein as a“second portion” of the first lockout arm 6310A.

The device 6002A further includes a firing member 4050 that isconfigured to be distally advanced along a cartridge axis CA between astarting position and an ending position with a staple cartridge 28200in the various manners disclosed herein. As can be see in FIG. 170, whenthe first lockout arm 6310A is in the locked or jaw locking position,the leg 6319A of angle member 6317A is in very close proximity to thefiring member 4050. Stated another way, the leg 6319A or lower featureof the primary lockout feature 6322A is in a path 4051 of the firingmember 4050. Thus, an actuation key on a staple cartridge that is seatedin the stapling device 6002A must be configured to initially engage theactuator cam arm 6322A when in the locked position and pivot theactuator cam arm 6322A to the unlocked position while providingsufficient clearance for the firing member 4050 to operate.

FIGS. 170-172 further depict portions of a staple cartridge 28200 thatcomprises an authentication key 28230 that is configured to actuate theactuator cam arm 6322A from the locked or jaw locking position to anunlocked or jaw closure position and provide sufficient clearance forthe firing member 4050 to operate while the cartridge 28200 remainsseated in the device. As can be seen in FIGS. 170-172, the staplecartridge 28200 comprises a cartridge body 28202 that has theauthentication key 28230 integrally formed therewith. The authenticationkey 28230 comprises a proximally extending authentication ramp 28232that angles inward toward the cartridge axis, but stops just short ofthe firing member 4050 when the firing member 4050 is in the startingposition. However, the authentication ramp 28232 is sufficiently longenough such that a first cam surface 28234 formed thereon can cammingengage the actuator cam arm 6322A as the cartridge 28200 is initiallylongitudinally inserted into the frame 6010 and move the actuator camarm 6322A laterally. In this example, when the cartridge 28200 is fullyseated (or “operably seated”) into the frame 6010, a second cam surface28236 on a side of the cartridge body 282020 contacts the secondarylockout feature 6326A to finish pivoting the first lockout arm 6310Alaterally into the unlocked or jaw closing position. See FIG. 171. Thus,in this arrangement the authentication ramp 28232 protrudes from one ofthe sidewall potions 28203 of the cartridge body 28202 and utilizes twocamming surfaces to completely pivot the first lockout arm 6310A intothe unlocked or jaw closure position.

FIG. 173 depicts a sled 4230′ that may be used in connection with astaple cartridge 29200 that is compatible with, for example, a surgicalstapling device 6002′. The surgical stapling device 6002′ comprises alockout arm 6310′ that is pivotally mounted in a frame 6010′ and ismovable between a locked or jaw locking position and an unlocked or jawclosure position. Specific details concerning the operation of surgicalstapling device 6002′ were provided above and will not be repeated here.The sled 4230′ is similar in construction to sled 4230 described above,but sled 4230′ additionally comprises an authentication key 4270′ thatprotrudes therefrom. The authentication key 4270′ comprises a relativelypointed authentication ramp 4272′ that comprises a first angled cammingsurface 4274′. The first angled camming surface 4274′ angles distally tointersect with a longitudinal second camming surface 4276′ that isapproximately parallel with the wedges or camming features 4232′ of thesled 4230′. Like sled 4230, sled 4230′ comprises an unlocking ledge4234′ that is configured to be engaged by an unlocking feature 4055 thatis formed on the firing member body 4052 when the sled 4230′ is in aproximal-most, unfired position to defeat a second lockout configured tolockout the firing member when a spent staple cartridge or no cartridgeat all is seated in the frame 6010′. Complete details concerning the useof a sled to unlock a second lockout were discussed above and will notbe repeated here.

FIG. 174 illustrates the unlocking interaction between theauthentication key 4270′ of the sled 4230′ and a distal end of 6311′ ofthe first lockout arm 6310′. FIG. 174 illustrates the sled 4230′ in anunfired position within the staple cartridge 29200. As can be seen inFIG. 174, the authentication key 4270′ protrudes proximally from thestaple cartridge 29200. Thus, as the cartridge 29200 is initiallylongitudinally seated in the frame of the stapling device 6002′, thefirst angled camming surface 4276′ contacts a camming surface 6313′ on adistal end 6311′ of the first lockout arm 6310′ and pivots the firstlockout arm 6310′ laterally from the locked or jaw locking position. Asthe cartridge 29200 is longitudinally moved in the proximal direction PDto bring the authentication ramp 4272′ into contact with a cammingsurface 6313′ on a distal end of the first lockout arm 6310′, theresulting resistive force RF that is experienced by the authenticationramp 4272′ is applied at an angle relative to a cartridge axis CA asshown in FIG. 174. The orientation of such resistive force RF may serveto apply a slight angled bias to the sled 4230′ to prevent the sled4230′ from being pushed distally out of the unfired position.

FIG. 174 illustrates the position of the cartridge 29200 just prior tobeing completely operably seated in the device. As can be seen in FIG.174, a camming surface 6313′ on the distal end 6311′ of the firstlockout arm 6310′ is ready to disengage the first angled camming surface4276′ on the authentication ramp 4272′. Further longitudinal travel ofthe staple cartridge 29200 in the proximal direction will cause thecamming surface 6313′ to contact the secondary camming surface 4276′ onthe authentication ramp 4272′ to finish pivoting the first lockout arm6310′ into the unlocked position. In alternative arrangements, thestaple cartridge 29200 may be fully seated when it attains the positionillustrated in FIG. 174. In either case, a biasing force BF establishedby the spring 6330′ that is urging the first lockout arm 6310′ in anopposite locking direction will be laterally applied to the sled 4230′.This lateral biasing force BF may also assist in retaining the sled4230′ in the unfired position until distally advanced by the firingmember. After the first lockout arm 6310′ has been moved to the unlockedor jaw closure position, the user may pivot the anvil to the closedposition. The firing member may then be distally advanced through astaple firing stroke. In alternative arrangements, a retainer that has aproximal keel feature may be attached to the staple cartridge 29200 tofurther retain the sled 4230′ in the unfired position while the staplecartridge 29200 is seated in the stapling device. The keel feature willprevent the sled 4230′ from being urged distally out of the unfiredposition during the above-described unlocking procedure. In suchinstance, the retainer may be similar to any of the various retainersdisclosed herein, but lack an authentication key. In such instances,once the cartridge assembly (retainer and cartridge) has been operablyseated in the device so that the first and second lockouts are defeated,unlocked or unlatched, the user may then remove the retainer.

FIGS. 175 and 176 illustrate another staple cartridge 30200 that has anauthentication key 30230 that is formed into a cartridge pan 30220 thatis attached to a cartridge body portion 30202 of the cartridge 30200. Ascan be seen in FIGS. 175 and 176, the authentication key 30230 comprisesa flap portion 30232 of the cartridge pan 30220 that extends at an anglefrom a corner 30203 of the cartridge body 30202. The flap portion 30232is reinforced by a bottom extension 30234 of the cartridge pan 30220. Inone example, staple cartridge 30200 is configured for use with(compatible with) a surgical stapling device 6002B that is similar tosurgical stapling device 6002A, except for a shape of a distal end 6311Bof a first lockout arm 6310B. Other details concerning the constructionand operation of surgical stapling device 6002A were described above andwill not be repeated here.

As can be seen in FIGS. 177 and 178, the distal end 6311B of the firstlockout arm 6310B comprises a camming surface 6313B and is somewhatwedge-shaped. FIG. 177 illustrates an initial longitudinal insertion ofthe staple cartridge 30200 into a frame 6010B of the surgical staplingdevice 6002B. As can be seen in FIG. 177, the flap portion 30232 of theauthentication key 30230 has initially contacted a top 6315B of thedistal end 6311B of the first lockout arm 6310B. Continued longitudinalinsertion of the staple cartridge 30200 in the proximal direction in theframe 6010B into the seated position illustrated in FIG. 178 causes theauthentication key 30230 to pivot the distal end 6311B of the firstlockout arm 6310B into the unlocked or jaw closure position. As the flapportion 30232 of the authentication key interacts with the cammingsurface 6313B, the first lockout arm 6310B is pivoted to the unlocked orjaw closure position and the distal end 6311B is wedged between theauthentication key 30230 and the sidewall 6020B of the frame 6010B. Ascan also be seen in FIG. 178, a proximal end 30207 of the cartridge body30202 is distal to the distal end 6311B of the first lockout arm 6310B.In the illustrated example, the authentication key 30230 is formed on aright side of the staple cartridge pan 30220. In alternativearrangements, the authentication key 30230 is formed on a left side ofthe cartridge pan 30220 when the first lockout arm is positioned on thatside of the surgical stapling device. Also, depending upon an amount ofspace available in particular surgical stapling devices, otherarrangements of the staple cartridge 30200 comprise authentication keys30230 that are formed on both sides of the cartridge pan 30200 makingthe cartridge functional for both forms of surgical stapling devices.

FIGS. 179 and 180 depict a staple cartridge 31200 that may be employedwith the surgical stapling device 6002A that was described above. As canbe seen in FIGS. 179 and 180, the staple cartridge 31200 comprises acartridge body 31202 that has an authentication key 31270 attachedthereto by a “deformable”, “bendable” or “rotatable” tab portion orliving hinge 31272. The tab portion 31272, as well as the authenticationkey 31270, may be integrally formed with the cartridge body 31202. Inother arrangements, the tab portion 31272 and authentication key 31270may be separately fabricated from the cartridge body 31202 and attachedthereto by adhesive, welding, etc. In such arrangements, the tab portion31272 and the authentication key 31270 may be fabricated from the samematerial comprising the cartridge body 31202 or the tab portion 31272and the authentication key 31270 may be fabricated from a differentmaterial. In still other arrangements, the tab portion 31272 and theauthentication key 31270 are fabricated from different materials.

In the illustrated arrangement, the authentication key 31270 comprisesan authentication ramp 31274 that comprises a first angled cammingsurface 31276 and a second camming surface 31278. FIG. 179 illustratesthe authentication key 31270 in a first state wherein a proximal end ortip 31279 of the authentication ramp 31274 is configured to contact anactuator cam arm of a first lockout arm of a surgical stapling devicewhen the staple cartridge 31200 is initially longitudinally insertedinto the surgical stapling device. FIG. 180 illustrates theauthentication key 31270 in a “second” state wherein the authenticationkey 31270 is deformed, bent or rotated state wherein the authenticationramp 31274 has been deflected against a proximal end 31209 of thecartridge body 31202.

FIG. 181 illustrates an initial longitudinal insertion of the staplecartridge 31200 into a frame 6010 of a surgical stapling device 6002A.As can be seen in FIG. 181, the tip 31279 of the authentication key31270 has initially contacted leg 6319A of the angled member 6317A on adistal end 6311A of the first lockout arm 6310A. As the staple cartridge31200 continues to be longitudinally inserted into the frame 6010 in aproximal direction, the tip 31279 rotates on the leg 6319A while the tabportion 31272 deforms, bends or rotates to the position shown in FIG.182 while biasing the first lockout arm 6310A into the unlocked or jawclosure position. As can be seen in FIG. 182, the tip 31279 is incontact with the retention tab 6326A of the angled member 6317A andserves to retain the retention tab 6326A within the window 6024 in thesidewall 6020 of the frame 6010. As can be see in FIG. 181, when thefirst lockout arm 6310A is in the locked or jaw locking position, theleg 6319A of angle member 6317A is in very close proximity to the firingmember 4050. Thus, an actuation key on a staple cartridge that is seatedin the stapling device 6002A must be configured to initially engage thedistal end 6311A of the first lockout arm 6310A when in the lockedposition and pivot the actuator cam arm 6322A to the unlocked positionwhile providing sufficient clearance for the firing member 4050 tooperate.

In one arrangement, the tab portion 31272 is fabricated from materialthat prevents the authentication key 31270 from being returned to anoperable or functional first state when in the second state thus makingthe staple cartridge 31200 a single-use cartridge. In otherarrangements, however, once the cartridge has been fired and removedfrom the frame 6010, the tab portion 31272 may be fabricated from aresilient material that allows the tab portion to return theauthentication key 31270 to a functional first state. In otherarrangements, the tab portion 31272 may be molded to or otherwiseattached to a retainer body of the various types disclosed herein. Insuch arrangements, the tab portion may be configured to be permanentlydeformed into the second state or it may be configured to return to afunctional first state after use. In still other arrangements, initialoperation of the firing member 4050 may cause the first lockout arm6310A to start to pivot laterally to a point wherein the firing memberaction causes the authentication key to rotate from the first state tothe second state. In the illustrated example, the authentication key31270 is formed on a right side of a longitudinal slot 31206 in thecartridge body 31202. In alternative arrangements, the authenticationkey 31270 is formed on a left side of the longitudinal slot 31206 whenthe first lockout arm is positioned on that side of the surgicalstapling device. Also, depending upon an amount of space available inparticular surgical stapling devices, other arrangements of the staplecartridge 31200 comprise authentication keys 31270 that are formed onboth sides of the slot 31206 making the cartridge functional for bothforms of surgical stapling devices.

FIGS. 183 and 184 depict a staple cartridge 32200 that may be employedwith various surgical stapling devices disclosed herein. As can be seenin FIGS. 183 and 184, the staple cartridge 32200 comprises a cartridgebody 32202 that has a cartridge pan 32220 attached thereto. In theillustrated example, an authentication key 32270 comprises a portion ofthe cartridge pan 32220 and is bent into a first state (FIG. 183)wherein when the staple cartridge is initially inserted into a frame ofthe staple device, the authentication key actuates the first lockout armof the device. Depending upon the particular design of the first lockoutarm of the device, as the staple cartridge continues to be inserted intothe frame, the authentication key 32270 may pivot the first lock out armof the device from the locked position to the unlocked position as it isforced into a second state shown in FIG. 184, for example. In otherarrangements, the authentication key 32270 remains in the first stateduring the complete insertion of the staple cartridge 32200 into theframe and moves the first lockout arm from the locked position to theunlocked position and retains the first lockout arm in the unlockedposition while the authentication key 32270 remains in that first state.Once the cartridge 32200 is fired and removed from the frame, the usermay move the authentication key 32270 to the second state making thecartridge 32200 a single-use cartridge.

In the illustrated example, the authentication key 32270 is formed on aright side of the cartridge pan 32220. In alternative arrangements, theauthentication key 32270 is formed on a left side of the cartridge pan32220 when the first lockout arm is positioned on that side of thesurgical stapling device. Also, depending upon an amount of spaceavailable in particular surgical stapling devices, other arrangements ofthe staple cartridge 32200 comprise authentication keys 32270 that areformed on both sides of the cartridge pan 32220 making the cartridgefunctional for both forms of surgical stapling devices.

FIG. 185 is a perspective view of a proximal end of a staple cartridge33200 comprises a cartridge body 33202 that has a cartridge pan 33220attached thereto. In the illustrated example, an authentication key33270 that comprises a right authentication ramp portion 33272R and aleft authentication ramp portion 33272L is formed into the cartridge pan33220. Each of the right and left authentication ramp portions 33272R,33272L are bent into a first state shown in FIG. 185 and are formed withlugs 33273 that are slidably received in slots 33275 provided in thecartridge pan 33220. By a applying a flattening force FF to a tip ofeach authentication ramp 33272R, 33272L, each of the ramps 33272R,33272L may be flattened against a proximal end 33225 of the cartridgepan 33220 rendering the authentication key 33270 inoperable for futureuse. The staple cartridge 33200 may be used, for example, in connectionwith surgical stapling devices 4002 and 8002 described above as well asothers.

FIG. 186 depicts a retainer 34400 that is configure to be removablycoupled to a staple cartridge 4200 to form a cartridge assembly 34500that may be operably seated in various surgical stapling devicesdisclosed herein. In the illustrated example, the retainer 34400comprises an elongate distal retainer body 34402 that is configured tocover a cartridge deck surface of the staple cartridge 4200 when theretainer 34400 is attached thereto. In one example, retainer 34400further comprises an angled nose portion 34420 that is configured toextend over a nose of the staple cartridge 4200 and be latched theretoby a distal latch tab 34422 in the various manners disclosed herein. Theretainer further comprises a pair of retention arms 34412 that areconfigured to releasable engage a ledge 4205 that is formed on thecartridge body 4202. Other various forms of retention features disclosedherein may be employed to couple the retainer 34400 to staple cartridge4200.

As can be seen in FIG. 186, the retainer 34400 further comprises aproximal end portion 34460 that is connected to the distal retainer body34402 by a resilient or spring section 34450. An authentication key34430 is formed on the proximal end portion 34460 and is shown in afirst state in FIG. 186. The authentication key 34430 may comprise anyof the various authentication key arrangements disclosed herein that areconfigured to move a first lockout arm of a surgical stapling device inwhich the cartridge assembly 34500 is seated from a locked position toan unlocked position when the authentication key 34430 is moved into asecond state. In use, the retainer 34400 is coupled to the staplecartridge 4200 to form the cartridge assembly 34500 and then thecartridge assembly 34500 is inserted into the stapling device with theauthentication key 34400 in the first state. At this point, the firstlockout arm of the stapling device may still be in the locked position.The user may then apply an actuation force AF to an actuator tab 34462formed on the proximal portion 34460 in a distal direction DD (or aproximal direction PD, depending upon the configuration of the lockout).Such action force causes the spring portion 34450 to flex and move theproximal portion 34460 which causes the authentication key 34430 to movein an actuation direction AD to a second state wherein the first lockoutarm is biased into the unlocked position by the authentication key. Thisactuation step may be undertaken before the cartridge assembly iscompletely operably seated in the device, so that once the first lockoutarm is moved to the unlocked position the cartridge may be fully seatedto retain the first lockout arm in that unlocked positon. The user maythen remove the retainer from the seated staple cartridge and commenceoperation of the surgical stapling device.

FIG. 187 depicts a retainer 35400 that is configure to be removablycoupled to a staple cartridge 4200 to form a cartridge assembly 35500that may be operably seated in various surgical stapling devicesdisclosed herein. In the illustrated example, the retainer 35400comprises an elongate retainer body 35402 that is configured to cover acartridge deck surface of the staple cartridge 4200 when the retainer35400 is attached thereto. In one example, retainer 35400 furthercomprises an angled nose portion 35420 that is configured to extend overa nose of the staple cartridge 4200 and be latched thereto by a distallatch tab 35422 in the various manners disclosed herein. The retainer35400 further comprises a pair of retention arms 35412 that areconfigured to releasably engage a ledge 4205 that is formed on thecartridge body 4202. Other various forms of retention features disclosedherein may be employed to couple the retainer 35400 to staple cartridge4200.

As can be seen in FIG. 187, the retainer 35400 further comprises anactuator member 35424 that is movably coupled to the retainer body35402. In the illustrated example, the actuator member 35424 is attachedto the top portion 35403 of the retainer body 35402 by a pair ofupstanding attachment pins 35405 that are received in angled slots 35426in the actuator member 35424. An authentication key 35530 is formed on aproximal end 35428 of the actuator member 35424 and an actuator tab35429 is formed in a distal end thereof. The authentication key 34530 isshown in a first state in FIG. 186. The authentication key 35430 maycomprise any of the various authentication key arrangements disclosedherein that are configured to move a first lockout arm of a surgicalstapling device in which the cartridge assembly 35500 is seated from alocked position to an unlocked position when the authentication key35430 is moved into a second state. In use, the retainer 35400 iscoupled to the staple cartridge 4200 to form the cartridge assembly35500 and then the cartridge assembly 35500 is inserted into thestapling device with the authentication key 35400 in the first state. Atthis point, the first lockout arm of the stapling device may still be inthe locked position. The user may then apply an actuation force AF tothe actuator tab 35429 which moves the authentication key 35430 in theactuation direction AD to a second state wherein the first lockout armis biased into the unlocked position by the authentication key 35430.This actuation step may be undertaken before the cartridge assembly35500 is completely operably seated in the device, so that once thefirst lockout arm is moved to the unlocked position the cartridge may befully seated to retain the first lockout arm in that unlocked positon.The user may then remove the retainer 35400 from the seated staplecartridge 4200 and commence operation of the surgical stapling device.

FIG. 188 depicts a retainer 36400 that is configure to be removablycoupled to a staple cartridge 4200 to form a cartridge assembly 36500that may be operably seated in various surgical stapling devicesdisclosed herein. In the illustrated example, the retainer 36400comprises an elongate retainer body 36402 that is configured to cover acartridge deck surface of the staple cartridge 4200 when the retainer36400 is attached thereto. In one example, retainer 36400 furthercomprises an angled nose portion 36420 that is configured to extend overa nose of the staple cartridge 4200 and be latched thereto by a distallatch tab 36422 in the various manners disclosed herein. The retainer36400 further comprises a pair of retention arms 36412 that areconfigured to releasably engage a ledge 4205 that is formed on thecartridge body 4202. Other various forms of retention features disclosedherein may be employed to couple the retainer 36400 to staple cartridge4200.

As can be seen in FIG. 188, the retainer 36400 further comprises anactuator member 36424 that is movably coupled to the retainer body36402. In the illustrated example, the actuator member 36424 is attachedto the top portion 36403 of the retainer body 36402 by a pair ofupstanding attachment pins 36405 that are received in slots 36426 in theactuator member 36424 that are transverse to the cartridge axis CA. Anauthentication key 36530 is formed on a proximal end 36428 of theactuator member 36424 and an actuator tab 36429 is formed in a lateralend thereof. The authentication key 36530 is shown in a first state inFIG. 188. The authentication key 36430 may comprise any of the variousauthentication key arrangements disclosed herein that are configured tomove a first lockout arm of a surgical stapling device in which thecartridge assembly 36500 is seated from a locked position to an unlockedposition when the authentication key 36430 is moved into a second state.In use, the retainer 36400 is coupled to the staple cartridge 4200 toform the cartridge assembly 36500 and then the cartridge assembly 36500is inserted into the stapling device with the authentication key 36400in the first state. At this point, the first lockout arm of the staplingdevice may still be in the locked position. The user may then apply anactuation force AF to the actuator tab 36429 which moves theauthentication key 36430 laterally in an actuation direction AD to asecond state wherein the first lockout arm is biased into the unlockedposition by the authentication key 36430. This actuation step may beundertaken before the cartridge assembly 36500 is completely operablyseated in the device, so that once the first lockout arm is moved to theunlocked position the cartridge may be fully seated to retain the firstlockout arm in that unlocked positon. The user may then remove theretainer 36400 from the seated staple cartridge 4200 and commenceoperation of the surgical stapling device.

FIG. 189 depicts a retainer 37400 that is configure to be removablycoupled to a staple cartridge 4200 to form a cartridge assembly 37500that may be operably seated in various surgical stapling devicesdisclosed herein. In the illustrated example, the retainer 37400comprises an elongate retainer body 37402 that is configured to cover acartridge deck surface of the staple cartridge 4200 when the retainer37400 is attached thereto. In one example, retainer 37400 furthercomprises an angled nose portion 37420 that is configured to extend overa nose of the staple cartridge 4200 and be latched thereto by a distallatch tab 37422 in the various manners disclosed herein. The retainer37400 further comprises a pair of retention arms 37412 that areconfigured to releasable engage a ledge 4205 that is formed on thecartridge body 4202. Other various forms of retention features disclosedherein may be employed to couple the retainer 37400 to staple cartridge4200.

As can be seen in FIG. 189, the retainer 37400 further comprises anactuator member 37424 that is movably coupled to the retainer body37402. In the illustrated example, the actuator member 37424 ispivotally attached to the top portion 37403 of the retainer body 37402by an attachment pin 37405. An authentication key 37430 is formed on aproximal end 37428 of the actuator member 37424 and an actuator tab37429 is formed in a lateral end thereof. The authentication key 37430is shown in a first state in FIG. 189. The authentication key 37430 maycomprise any of the various authentication key arrangements disclosedherein that are configured to move a first lockout arm of a surgicalstapling device in which the cartridge assembly 37500 is seated from alocked position to an unlocked position when the authentication key37430 is moved into a second state. In use, the retainer 37400 iscoupled to the staple cartridge 4200 to form the cartridge assembly37500 and then the cartridge assembly 37500 is inserted into thestapling device with the authentication key 37400 in the first state. Atthis point, the first lockout arm of the stapling device may still be inthe locked position. The user may then apply an actuation force AF tothe actuator tab 37429 which moves the authentication key 37430 in anactuation direction AD to a second state wherein the first lockout armis biased into the unlocked position by the authentication key 37430.This actuation step may be undertaken before the cartridge assembly37500 is completely operably seated in the device, so that once thefirst lockout arm is moved to the unlocked position the cartridge may befully seated to retain the first lockout arm in that unlocked positon.The user may then remove the retainer 37400 from the seated staplecartridge 4200 and commence operation of the surgical stapling device.

FIG. 190 depicts a retainer 38400 that is configure to be removablycoupled to a staple cartridge 4200 to form a cartridge assembly 38500that may be operably seated in various surgical stapling devicesdisclosed herein. In the illustrated example, the retainer 38400comprises an elongate retainer body 38402 that is configured to cover acartridge deck surface of the staple cartridge 4200 when the retainer38400 is attached thereto. In one example, retainer 38400 furthercomprises an angled nose portion 38420 that is configured to extend overa nose of the staple cartridge 4200 and be latched thereto by a distallatch tab 38422 in the various manners disclosed herein. The retainer38400 further comprises a pair of retention arms 38412 that areconfigured to releasable engage a ledge 4205 that is formed on thecartridge body 4202. Other various forms of retention features disclosedherein may be employed to couple the retainer 38400 to staple cartridge4200.

As can be seen in FIG. 190, the retainer 38400 further comprises anactuator member 38424 that is movably coupled to the retainer body38402. In the illustrated example, the actuator member 38424 isrotatably attached to the top portion 38403 of the retainer body 38402by a pair of catches 38405. An authentication key 38430 is formed on aproximal end 38428 of the actuator member 38424 and an actuator tab38429 is attached thereto. The authentication key 38430 is shown in afirst state in FIG. 189. The authentication key 38430 may be fabricatedas shown or may comprise any of the various authentication keyarrangements disclosed herein that are configured to move a firstlockout arm of a surgical stapling device in which the cartridgeassembly 38500 is seated from a locked position to an unlocked positionwhen the authentication key 38430 is moved into a second state. In use,the retainer 38400 is coupled to the staple cartridge 4200 to form thecartridge assembly 38500 and then the cartridge assembly 38500 isinserted into the stapling device with the authentication key 38400 inthe first state. At this point, the first lockout arm of the staplingdevice may still be in the locked position. The user may then apply anactuation force AF to the actuator tab 38429 which rotates theauthentication key 38430 in an actuation direction AD to a second statewherein the first lockout arm is biased into the unlocked position bythe authentication key 38430. This actuation step may be undertakenbefore the cartridge assembly 38500 is completely operably seated in thedevice, so that once the first lockout arm is moved to the unlockedposition the cartridge may be fully seated to retain the first lockoutarm in that unlocked positon. The user may then remove the retainer38400 from the seated staple cartridge 4200 and commence operation ofthe surgical stapling device.

FIG. 191 depicts a retainer 39400 that is configure to be removablycoupled to a staple cartridge 4200 to form a cartridge assembly 39500that may be operably seated in various surgical stapling devicesdisclosed herein. In the illustrated example, the retainer 39400comprises an elongate retainer body 39402 that is configured to cover acartridge deck surface of the staple cartridge 4200 when the retainer39400 is attached thereto. In one example, retainer 39400 furthercomprises an angled nose portion 38420 that is configured to extend overa nose of the staple cartridge 4200 and be latched thereto by a distallatch tab 38422 in the various manners disclosed herein. The retainer39400 further comprises a pair of retention arms 38412 that areconfigured to releasable engage a ledge 4205 that is formed on thecartridge body 4202. Other various forms of retention features disclosedherein may be employed to couple the retainer 39400 to staple cartridge4200.

As can be seen in FIG. 191, an authentication key 4230 is formed intocartridge pan 4220 that is attached to the cartridge body 4202. In theillustrated example, the authentication key 4230 comprises a springmember that is movable from a first state to a second state. In thisembodiment, an actuator lug 39424 is formed on a bottom surface of aproximal end of the retainer 39400. When the retainer 39400 is attachedto the staple cartridge 4200 as shown, the actuator lug 39424 retainsthe authentication key in a second state. When the retainer 39400 isdetached from the staple cartridge 4200, the authentication key 4230spring back to a first state. In use, the retainer 39400 is coupled tothe staple cartridge 4200 to form the cartridge assembly 39500 and thenthe cartridge assembly 39500 is inserted into the stapling device withthe authentication key 39400 in the second state. As the cartridgeassembly 39500 is seated in the stapling device, the authentication key4230 biases the first lockout arm into the unlocked position. The usermay then remove the retainer 39400 from the seated staple cartridge4200. When the retainer 39400 is removed form the staple cartridge 4200,the authentication key 4230 is permitted to spring to the first statewherein it is out of the road of the firing member of the staplingdevice. In other arrangements, when the retainer 39400 is removed, theauthentication key moves the first lockout arm from the locked positionto the unlocked position as the authentication key 4230 springs back tothe first position.

FIG. 192 depicts a retainer 40400 that is configure to be removablycoupled to a staple cartridge 4200 to form a cartridge assembly 40500that may be operably seated in various surgical stapling devicesdisclosed herein. In the illustrated example, the retainer 40400comprises an elongate retainer body 40402 that is configured to cover acartridge deck surface of the staple cartridge 4200 when the retainer40400 is attached thereto. In one example, retainer 40400 furthercomprises an angled nose portion 40420 that is configured to extend overa nose of the staple cartridge 4200 and be latched thereto by a distallatch tab 40422 in the various manners disclosed herein. The retainer40400 further comprises a pair of retention arms 40412 that areconfigured to releasable engage a ledge 4205 that is formed on thecartridge body 4202. Other various forms of retention features disclosedherein may be employed to couple the retainer 40400 to staple cartridge4200.

As can be seen in FIG. 192, an authentication key 40430 that comprises acrushable member is located at a proximal end 40460 of the retainer body40402. In one form, the authentication key 40430 may be incorporatedinto (molded) to the retainer body 40402 or attached thereto. Theauthentication key 40430 may be fabricated from flexible packagingmaterial, Polyethylene terephthalate (PET), cardboard, etc. and beattached to the body portion 40202 by appropriate adhesive. FIG. 192illustrates the authentication key 40430 in a first state. In use, theretainer 40400 is coupled to the staple cartridge 4200 to form thecartridge assembly 40500 and then the cartridge assembly 40500 isinserted into the stapling device with the authentication key 40400 inthe first state. As the cartridge assembly 40500 is seated in thestapling device, the authentication key 40430 is crushed into the secondstate while biasing the first lockout arm into the unlocked position.The user may then remove the retainer 40400 from the seated staplecartridge 4200 and commence operation of the surgical stapling device.The crushed authentication key 40430 may be removed from the retainerbody 40402 and new authentication key 40430 (in a first state) may beattached to the retainer body 40402 to enable the retainer 40400 to bereused.

FIG. 193-195 depict a retainer 10400′ that is configure to be removablycoupled to a staple cartridge 4200 to form a cartridge assembly 10500′that may be operably seated in various surgical stapling devices such assurgical stapling device 6002A. In the illustrated example, retainer10400′ is similar to retainer 10400 described above, except for thefollowing differences. As can be seen in FIGS. 193-195, the retainer10400′ further comprises an actuator member 10600 that is movablycoupled to the retainer body 10402. In the illustrated example, theactuator member 10600 is movably coupled to the retainer body 10402 by atab 10602 that, in one arrangement, is integrally formed (molded) withthe retainer body 10402 and the actuator member 10600. An authenticationkey 10630 is formed on a proximal end 10604 of the actuator member 10600and an actuator tab 10608 is formed in a distal end 10606 end thereof.The authentication key 10630 is shown in a first state in FIG. 194. Inuse, the retainer 10400′ is coupled to the staple cartridge 4200 to formthe cartridge assembly 10500′ and then the cartridge assembly 10500′ isinserted into the stapling device 6002A with the authentication key10630 in the first state. At this point, the first lockout arm 6310A ofthe stapling device is biased into the locked position. FIG. 194illustrates the position of the actuator member 10600 and theauthentication key 10630 when the cartridge assembly 10500′ is initiallyinserted into the frame 6010 of the stapling device 6002A.

FIGS. 193 and 195 illustrate a further insertion of the cartridgeassembly 10500′ into the frame 6010 to a final seated position therein.As the user moves the cartridge assembly 10500′ proximally from theinitial insertion position depicted in FIG. 194, the actuator tab 10608contacts a portion of the surgical stapling device 6002A and is movedinto the second state. In the illustrated example, the actuator tab10608 contacts a corresponding downwardly extending tissue stop 6109that is formed on the anvil 6100. Such movement pivots theauthentication key 10630 into the second state wherein theauthentication key 10630 cammingly engages an actuator cam member 6322Aon the first lockout arm 6310A and pivots the first lockout arm 6310Afrom the locked position to the unlocked position. The user may thenremove the retainer 10400′ from the seated staple cartridge 4200 andcommence operation of the surgical stapling device 6002A. FIG. 195Adepicts the retainer 10400′ that has a different actuator tab 10608′that may otherwise operate in the same manner as the actuator tab 10608.

FIG. 196-198 depict a retainer 10400″ that is configure to be removablycoupled to a staple cartridge 4200 to form a cartridge assembly 10500″that may be operably seated in various surgical stapling devices such assurgical stapling device 6002A. In the illustrated example, retainer10400″ is similar to retainer 10400′ described above, except that anactuator member 10700 is movably coupled to the retainer body 10402 foraxial and pivotal travel relative thereto in response to contact with aportion of the surgical stapling device 6002A. In the illustratedexample, the actuator member 10700 comprises an actuator body portion10701 that comprises a pin 10702 that is received on a longitudinal slot10605 provided in the retainer body 10402. An authentication keyarrangement 10730 is formed on a proximal end 10704 of the actuator bodyportion 10700 and an actuator tab 10708 is formed in a distal end 10706end thereof. The authentication key 10730 is shown in a first state inFIG. 197. In use, the retainer 10400″ is coupled to the staple cartridge4200 to form the cartridge assembly 10500″ and then the cartridgeassembly 10500″ is inserted into the stapling device 6002A with theauthentication key 10730 in the first state. At this point, the firstlockout arm 6310A of the stapling device 6002A is biased into the lockedposition. FIG. 197 illustrates the position of the actuator member 10700and the authentication key 10730 when the cartridge assembly 10500″ isinitially inserted into the frame 6010 of the stapling device 6002A.

FIGS. 196 and 198 illustrate a further insertion of the cartridgeassembly 10500″ into the frame 6010 to a final seated position therein.As the user moves the cartridge assembly 10500″ proximally from theinitial insertion position depicted in FIG. 197, the actuator tab 10708contacts a portion of the surgical stapling device 6002A and is movedinto the second state. In the illustrated example, the actuator tab10708 contacts a corresponding downwardly extending tissue stop 6109that is formed on the anvil 6100. Such movement pivots theauthentication key 10730 into the second state wherein theauthentication key 10730 cammingly engages an actuator cam member 6322Aon the first lockout arm 6310A and pivots the first lockout arm 6310Afrom the locked position to the unlocked position. The user may thenremove the retainer 10400″ from the seated staple cartridge 4200 andcommence operation of the surgical stapling device 6002A.

FIG. 199-201 depict a retainer 10400′ that is configure to be removablycoupled to a staple cartridge 4200 to form a cartridge assembly 10500′that may be operably seated in various surgical stapling devices such assurgical stapling device 6002A. In the illustrated example, retainer10400′ is similar to retainer 10400″ described above, except that anactuator member 10800 is movably coupled to the retainer body 10402 forpivotal vertical travel relative thereto in response to contact with aportion of the surgical stapling device 6002A. In the illustratedexample, the actuator member 10800 comprises an actuator body portion10801 that is attached to the retainer body 10402 by a living hinge10802. An authentication key arrangement 10830 is formed on a proximalend 10804 of the actuator body portion 10801. The authentication key10830 is shown in a first state in FIG. 200. In use, the retainer 10400′is coupled to the staple cartridge 4200 to form the cartridge assembly10500′ and then the cartridge assembly 10500′ is inserted into thestapling device 6002A with the authentication key 10830 in the firststate. At this point, the first lockout arm 6310A of the stapling device6002A is biased into the locked position. FIGS. 199 and 200 illustratethe position of the actuator member 10800 and the authentication key10830 when the cartridge assembly 10500′ is initially inserted into theframe 6010 of the stapling device 6002A.

FIG. 201 illustrates a further insertion of the cartridge assembly10500′ into the frame 6010 to a final seated position therein. As theuser moves the cartridge assembly 10500′ proximally from the initialinsertion position depicted in FIG. 200, the actuator member 10800contacts a portion of the surgical stapling device 6002A and is movedinto the second state. In the illustrated example, the actuator member10800 contacts a portion of the anvil 6100 which pivots the actuatormember 10800 downward into a second state wherein the authentication key10830 is aligned to cammingly engage an actuator cam member 6322A on thefirst lockout arm 6310A when the cartridge assembly 10500′″ is movedproximally into the final seated position. As the cartridge assembly10500′″ is moved into that position, the authentication key 10830 causesthe first lockout arm 6310A to pivot into the unlocked position. Theuser may then remove the retainer 10400′ from the seated staplecartridge 4200 and commence operation of the surgical stapling device6002A.

FIGS. 202-205 illustrate a deactivator element 41100 that may be used inconnection with various staple cartridge and retainer configurationsdisclosed herein to defeat a first lockout of various surgical staplingdevices disclosed herein. As can be seen in FIG. 204, in one form, adeactivator element 41100 comprises a deactivator body 41102 that has anauthentication key feature 41130 formed on a proximal end 41104 thereof.A removal tab 41110 also extends from a distal end 41408 at a rightangle to the body 41102. The authentication key 41130 comprises anauthentication ramp 41132 that has a cam surface 41134 thereon.

In the arrangement depicted in FIGS. 203 and 204, the deactivator insert41100 is configured to be used with a cartridge assembly 5500′ that isconfigured to be used with any of the various surgical stapling devicesdisclosed herein. FIG. 204 illustrates the cartridge assembly 5500′seated in surgical stapling device 7002. Cartridge assembly 5500′comprises a retainer 5400′ that is similar to retainer 5400 describedabove except that a retainer body 5402′ of the retainer 5400′ stopsshort of a proximal end 4201 of a staple cartridge 4200 on which it isattached and retainer 5400′ lacks a dedicated authentication key. Theretainer 5500′ is sized to cover a portion of a cartridge deck surface4204 that has staple pockets (not shown) therein. In the illustratedarrangement, a step 41103 is formed in the body 41102 to accommodate theretainer body 5402′ as shown in FIG. 203. An element locator or detent5409′ protrudes from the retainer body 5402′ and is configured to bereceived within a locator cavity 41105 in the deactivator body 41102 toproperly locate the deactivator element on the cartridge assembly 5500′.When the deactivator element 41100 is installed on the retainer 5400′ ina deactivator position as shown in FIG. 203, the proximal end portion41104 is supported on the cartridge deck surface 4204 and theauthentication key 41130 protrudes proximally from the proximal end 4201of the staple cartridge 4200. Such arrangement serves to accommodate theretainer 5400′ as well as the deactivator element 41100 between thestaple cartridge 4200 and an underside of the anvil 7100 of the surgicalstapling device 7002.

In use, the retainer 5400′ may be attached to an unfired staplecartridge 4200 in the above described manner to form a cartridgeassembly 5500′. Thereafter, the deactivator element 41100 may beinstalled on the retainer 5400′ as was described above. The cartridgeassembly 5500′ with the deactivator element 41100 attached is theninserted into the frame 7010. As the cartridge assembly 5500′ isinitially inserted into the frame 7010, the authentication ramp 41132initially contacts an upstanding actuator cam arm 7322 that is formed ona distal end 7320 of the first lockout arm 7310. See FIG. 48. Continuedmovement of the cartridge assembly 5500′ in the proximal directionwithin the frame 7010 causes the cam surface 41134 on the authenticationramp 41132 to cam the actuator cam arm 7322 and the first lockout arm7310 to an unlocked or jaw closure position. When in that position, theproximal end portion 41104 of the deactivator element 41100 is retainedin position by an underside of the anvil 7100. The user may then removethe retainer 5400′ from the staple cartridge 4200 while the deactivatorelement 41100 remains in place. The element locator or detent 5409′ onthe retainer 5400′ is configured to permit the retainer 5400′ tolongitudinally disengage the locator cavity 41105 in the deactivatorbody 41102 without pulling the deactivator out of position. When in thatposition, the removal tab 41110 protrudes laterally beyond a side of theframe 7010 making it easy for the user to remove the deactivator element41100 from the stapling device. After the deactivator 41100 has beenremoved from the surgical stapling device 7002, the proximal end 4202 ofthe staple cartridge 4200 retains the first lockout arm 7310 in theunlocked or jaw closure position in the manner described above. Thesurgical stapling device 7002 may now be actuated. The deactivatorelement 41100 may have a handle, tab, string, tether or other useraccessible feature that allows removal of the deactivator element 41100from the surgical stapling device without falling into sensitive areaswithin the operating room, for example. In one arrangement, thedeactivator element 41100 is attached to the retainer 5400′ by a tether41150.

In alternative arrangements, the deactivator element 41100 may directlyattached to the staple cartridge 4200 as opposed to the retainer 5400′.In such instances, the deactivator element 41100 may not have the step41103 formed therein and the element locator or detent 5409′ may beformed on the cartridge deck surface 4204. In other arrangements,however, the deactivator element 41100 may have locator features/tabs,holes, detents thereon that interface with other portions of the staplecartridge 4200, such as the longitudinal slot 4206, cartridge body 4202,cartridge pan 4220, etc.

FIGS. 206-210 depict an alternative staple cartridge 42200 that may beused in connection with various surgical stapling devices disclosedherein to defeat a lockout thereof. As can be seen in FIG. 206, in oneform, the staple cartridge 42200 comprises a cartridge body 42202 thatcomprises a proximal end 42204 and a distal end portion (not shown). Acentrally disposed longitudinal slot 42222 extends from the proximal end42204 to the distal end portion and defines a cartridge axis CA. Thelongitudinal slot 4222 is configured to accommodate the axial passage ofa firing member of the device therethrough. In the example illustratedin FIGS. 208 and 209, the cartridge 42200 is shown in connection withsurgical stapling device 6002A. Thus, in this illustrated example, thelongitudinal slot 42222 is configured to accommodate passage of firingmember 4050 as it is actuated during a staple firing stroke from astarting to an ending position within the cartridge body 42202. Thelongitudinal slot 42222 divides the cartridge body 42202 into a rightbody portion 42224 and a left body portion 42230. The right body portion42224, for example, extends between a right slot wall 42226 and a rightside 42228 of the cartridge body 42202. The left body portion 422230extends between a left slot wall 42227 and a left side 42232 of thecartridge body 42202.

The right body portion 42224 comprises a pair of right longitudinal camslots 42240 and the left body portion 42230 comprises a pair of leftlongitudinal cam slots 42242. The right longitudinal cam slots 42240extend from the proximal end 42204 to the distal end portion and areconfigured to accommodate corresponding right wedges or cam members42440 that are formed on a sled 42430 that is slidably supported withinthe staple cartridge 42200. Similarly, the left longitudinal cam slots42242 extend from the proximal end 42204 to the distal end portion andare configured to accommodate corresponding left wedges or cam members42442 on the sled 42430. The right cam members 42440 and the left cammembers 42442 are configured to drivingly engage corresponding lines ofstaple drivers (not shown) in the cartridge body 42202. The sled 42430further comprises a central body portion 42432 that may include anunlocking ledge (not shown) that is configured to be engaged by anunlocking feature that is formed on the firing member 4050 in the abovedescribed manners to defeat a second lockout in the surgical staplingdevice 6002A.

In the illustrated arrangement, the longitudinal slot and each of thelongitudinal cam slots are open in a bottom portion 42221 of thecartridge body 42202 to form a sled opening 42223 into which the sled42430 may be inserted. A cartridge pan 42250 is attached to thecartridge body to facilitate installation of staple drivers and staples(not shown) into staple pockets formed in the cartridge body 42202 andprevent the staples and staple drivers from falling out of the staplepockets through the open bottom of the cartridge body 42202 thereafter.The cartridge pan 42250 further comprises a notch 42252 in a distal endportion thereof to facilitate installation of the sled 42430 into thebottom of the staple cartridge 42200. As can be further seen in FIGS.206 and 208, the longitudinal slot 42222 extends from a longitudinalslot opening 42225 in the proximal end 42204 of the cartridge body 42204and each of the longitudinal cam slots 42242 extend from a cam slotopening 42227 in the proximal end of the cartridge body 42204. When thesled 42430 is in an unfired position within the cartridge 42200, aproximal end 42433 of the sled 42430 lies on a cartridge body plane CPthat is defined by a proximal end 42204 of the cartridge body 42202. Inalternative arrangements, one of the right longitudinal cam slots isbridged or blocked by an authentication key assembly 42260.

The authentication key assembly 42260 protrudes proximally from theright body portion 42224 of the cartridge body 42202. In the illustratedarrangement, the authentication key assembly 42260 is integrally formedwith the proximal end 42204 of the cartridge body 42202. Theauthentication key assembly 42260 comprises a top portion 42280 thatcantilevers out from the proximal end 42204 of the cartridge body 42202in a proximal direction. The top portion comprises a top surface 42280that is coplanar with a cartridge deck surface 42205 defined on thecartridge body 42202. In addition, the top portion 42280 has a sidesurface 42284 that is coplanar with the right slot wall 42226. Theauthentication key 42260 further comprises a bottom portion 42261 thatextends downwardly from the top portion 42280 to define anauthentication ramp 42262. As can be seen in FIG. 208, theauthentication ramp 42262 tapers to a rounded proximal tip 42264 thatdefines a first cam surface 42266. The authentication ramp 42262 furthercomprises a notch 42270 that defines an angled second lower cam surface42272.

Turning to FIG. 209, in one arrangement, the staple cartridge 42200comprises a cartridge width W and the authentication ramp 42262 has aramp length X that is measured from the proximal end 42204 of thecartridge body 42202 or plane CP which also coincides with the proximalend 42433 of the sled 42430. In one arrangement to facilitate properactuation of a lockout 6310A of a surgical staling device 6002A in thevery limited amount of available space for the authentication key 42260to reside within the frame 6010 of the device throughout the entirestapling process, the dimensions of the authentication key 42260relative to a width of the staple cartridge may be critical. In at leastone example, (0.3)W<X<(0.5)W. Thus, stated another way, theauthentication ramp 42262 protrudes proximally beyond the proximal end42433 of the sled 42430 a distance of between 30% and 50% of the overallcartridge width. Further to the above, the authentication key 42260 isintegrally formed in (molded) the cartridge body 42202 on one side ofthe longitudinal slot 42222. The authentication ramp 42262 defines aramp surface 42263 that generally lies along a ramp axis RA that istransverse to a cartridge axis CA. Because the authentication ramp 42262is aligned with one of the right cam slots 42240, the authenticationramp 42262 prevents the sled 42430 from falling out of the back of thecartridge body 42202.

FIG. 209 illustrates an initial alignment of the staple cartridge 42200with the frame 6010 of the surgical stapling device 6002A. When in thatinitial insertion position, the first cam surface 42266 on theauthentication ramp 42262 is aligned with an upstanding actuator cammember 6322A that is formed on a distal end 6311A of a first lockout arm6310A of the surgical stapling device 6002A. During the insertion of thestaple cartridge 42200 into the frame 6010, the first cam surface 42266on the authentication ramp 42262 contacts the actuator cam member 6322Aon the first lockout arm 6310A and begins to pivot the first lockout arm6310A laterally out of a locking position or jaw locking position.Stated another way, the first cam surface 42266 moves the first lockoutarm 6310A in a direction away from the cartridge axis CA. Furtherproximal advancement of the staple cartridge 42200 into the frame 6010causes the second cam surface 42272 on the authentication ramp 42262 toengage a leg 6319A on a distal end 6311A of the first lockout arm 6310and further pivot the first lockout arm 6310A into the unlocked or jawclosure position. The second cam surface 42272 retains the first lockoutarm 6310A in the unlocked or jaw closure position. Thus, theauthentication key 42260 of the staple cartridge 42200 is configured todefeat a first lockout 6300A of the surgical stapling device 6002A whenthe staple cartridge 42200 is operably seated in the surgical staplingdevice.

Various aspects of the subject matter described herein are set out inthe following examples.

Example 1—A staple cartridge configured for use with a surgical staplingdevice comprising a lockout for preventing operation of the surgicalstapling device. The staple cartridge comprises a first cam surface onthe staple cartridge. The first cam surface is configured to move thelockout from a locked position to an intermediate position when thestaple cartridge is initially inserted into the surgical staplingdevice. The staple cartridge further comprises a second cam surface onthe staple cartridge. The second cam surface is configured to move thelockout from the intermediate position to an unlocked position when thestaple cartridge is operably seated in the surgical stapling device. Thefirst cam surface is proximal to the second cam surface and verticallydisplaced therefrom.

Example 2—The staple cartridge of Example 1, further comprising acartridge body and a cartridge pan attached to the cartridge body.

Example 3—The staple cartridge of Example 2, wherein the first andsecond cam surfaces are formed in the cartridge pan.

Example 4—The staple cartridge of Example 2, wherein the first camsurface is formed in the cartridge body, and wherein the second camsurface is formed in the cartridge pan.

Example 5—The staple cartridge of Example 1, 2, 3, or 4, wherein thefirst cam surface is formed on a retainer attached to the cartridgebody, and wherein the second cam surface is formed in the cartridge pan.

Example 6—The staple cartridge of Example 1, 2, 3, 4, or 5, wherein thefirst cam surface comprises a first upper cam surface and a second uppercam surface. The first upper cam surface is angled relative to thesecond upper cam surface and is proximal thereto. The second cam surfacecomprises a first lower cam surface located below the first upper camsurface and is distal thereto. The second cam surface further comprisesa second lower cam surface that is distal to the first lower camsurface.

Example 7—The staple cartridge of Example 2 or 3, further comprising anauthentication key bent into the cartridge pan and protruding proximallyfrom the cartridge body, wherein the first and second cam surfaces areformed on the authentication key.

Example 8—The staple cartridge of Example 7, wherein the authenticationkey comprises an upper ramp tab bent into the authentication key,wherein the upper ramp tab comprises the first cam surface, wherein theauthentication key further comprises a lower ramp tab bent into theauthentication key, wherein the lower ramp tab is located below theupper ramp tab, and wherein the lower ramp tab comprises the second camsurface.

Example 9—The staple cartridge of Example 1, 2, 3, 4, 5, 6, 7, or 8,wherein when the staple cartridge is initially inserted into thesurgical stapling device in a longitudinal direction, the first camsurface moves the lockout a first lateral distance to the intermediateposition, and wherein when the staple cartridge is furtherlongitudinally inserted into the surgical stapling device, the secondcam surface moves the lockout a second lateral distance.

Example 10—A surgical stapling assembly comprising a surgical staplingdevice comprising a first jaw, a second jaw movable relative to thefirst jaw between an open position and a closed position, a firingmember movable between a starting position and an ending position duringa staple firing stroke, and a lockout movable between a locked positionwherein the lockout prevents operation of the surgical stapling deviceand an unlocked position wherein the surgical stapling device isoperable. The surgical stapling assembly further comprises a staplecartridge comprising a cartridge body, a first cam surface on the staplecartridge, and a second cam surface on the staple cartridge. Thecartridge body is sized to be longitudinally seated in one of the firstand second jaws. The first cam surface is configured to move the lockoutfrom the locked position to an intermediate lateral position between thelocked and the unlocked positions when the staple cartridge is initiallyinserted into the one of the first and second jaws. The second camsurface is configured to move the lockout laterally from theintermediate position to the unlocked position when the staple cartridgeis fully seated in the surgical stapling device. The first cam surfaceis proximal to the second cam surface.

Example 11—The surgical stapling assembly of Example 10, wherein thelockout comprises lockout arm movably supported in the one of the firstand second jaws, wherein the lockout arm is laterally movable betweenthe locked position, the intermediate position, and the unlockedposition, wherein when the staple cartridge is initially inserted in theone of the first and second jaws, the first cam surface contacts thelockout arm at a first location to laterally move the lockout arm to theintermediate position, and wherein when the staple cartridge is fullyseated in the one of the first and second jaws, the second cam surfacecontacts the lockout arm at a second location that is below the firstlocation.

Example 12—The surgical stapling assembly of Example 11, wherein thestaple cartridge is operably seated in the first jaw, and wherein whenthe lockout is in the locked position, the lockout arm prevents thesecond jaw from moving between the open position and the closedposition.

Example 13—The surgical stapling assembly of Example 10, 11, or 12,wherein the staple cartridge further comprises a cartridge pan attachedto the cartridge body, and wherein the cartridge pan comprises at leastone of the first and second cam surfaces.

Example 14—The surgical stapling assembly of Example 13, wherein thecartridge body comprises the first cam surface, and wherein thecartridge pan comprises the second cam surface.

Example 15—The surgical stapling assembly of Example 10, 11, 12, 13, or14, further comprising a retainer comprising a retainer body and anauthentication key protruding from the retainer body. The retainer bodyis configured to be removably attached to the cartridge body. Theauthentication key comprises the first cam surface.

Example 16—The surgical stapling assembly of Example 10, 11, 12, 13, 14,or 15, wherein the cartridge body is molded from a polymer material, andwherein the first cam surface is formed on a first ramp that is moldedto the cartridge body.

Example 17—The surgical stapling assembly of Example 10, 11, 12, 13, 14,15, or 16, wherein the cartridge body defines a cartridge axis, andwherein the first and second cam surfaces are located on one side of thecartridge axis.

Example 18—A cartridge assembly configured for use with a surgicalstapling device comprising a lockout configured to prevent operation ofthe surgical stapling device. The cartridge assembly comprises a staplecartridge configured to be seated in the surgical stapling device and aretainer removably coupled to the staple cartridge. The retainercomprises a first cam surface configured to laterally move the lockoutfrom a locked position to an intermediate position when the cartridgeassembly is initially inserted into the surgical stapling device. Thestaple cartridge comprises a second cam surface configured to laterallymove the lockout from the intermediate position to an unlocked positionwhen the cartridge assembly is operably seated in the surgical staplingdevice. The first cam surface is proximal to the second cam surface.

Example 19—The cartridge assembly of Example 18, wherein the staplecartridge comprises a cartridge body and a plurality of staple pockets.The cartridge body comprises a deck surface. Each staple pocket operablystores a surgical staple therein. The retainer is sized to be receivedon the deck surface and cover the staple pockets when the retainer isattached to the staple cartridge.

Example 20—The cartridge assembly of Example 19, wherein the staplecartridge further comprises a cartridge pan attached to the cartridgebody, and wherein the second cam surface is formed on a bent portion ofthe cartridge pan.

Many of the surgical instrument systems described herein are motivatedby an electric motor; however, the surgical instrument systems describedherein can be motivated in any suitable manner. In various instances,the surgical instrument systems described herein can be motivated by amanually-operated trigger, for example. In certain instances, the motorsdisclosed herein may comprise a portion or portions of a roboticallycontrolled system. Moreover, any of the end effectors and/or toolassemblies disclosed herein can be utilized with a robotic surgicalinstrument system. U.S. patent application Ser. No. 13/118,241, entitledSURGICAL STAPLING INSTRUMENTS WITH ROTATABLE STAPLE DEPLOYMENTARRANGEMENTS, now U.S. Pat. No. 9,072,535, for example, disclosesseveral examples of a robotic surgical instrument system in greaterdetail.

The surgical instrument systems described herein have been described inconnection with the deployment and deformation of staples; however, theembodiments described herein are not so limited. Various embodiments areenvisioned which deploy fasteners other than staples, such as clamps ortacks, for example. Moreover, various embodiments are envisioned whichutilize any suitable means for sealing tissue. For instance, an endeffector in accordance with various embodiments can comprise electrodesconfigured to heat and seal the tissue. Also, for instance, an endeffector in accordance with certain embodiments can apply vibrationalenergy to seal the tissue.

The entire disclosures of:

-   -   U.S. Pat. No. 5,403,312, entitled ELECTROSURGICAL HEMOSTATIC        DEVICE, which issued on Apr. 4, 1995;    -   U.S. Pat. No. 7,000,818, entitled SURGICAL STAPLING INSTRUMENT        HAVING SEPARATE DISTINCT CLOSING AND FIRING SYSTEMS, which        issued on Feb. 21, 2006;    -   U.S. Pat. No. 7,422,139, entitled MOTOR-DRIVEN SURGICAL CUTTING        AND FASTENING INSTRUMENT WITH TACTILE POSITION FEEDBACK, which        issued on Sep. 9, 2008;    -   U.S. Pat. No. 7,464,849, entitled ELECTRO-MECHANICAL SURGICAL        INSTRUMENT WITH CLOSURE SYSTEM AND ANVIL ALIGNMENT COMPONENTS,        which issued on Dec. 16, 2008;    -   U.S. Pat. No. 7,670,334, entitled SURGICAL INSTRUMENT HAVING AN        ARTICULATING END EFFECTOR, which issued on Mar. 2, 2010;    -   U.S. Pat. No. 7,753,245, entitled SURGICAL STAPLING INSTRUMENTS,        which issued on Jul. 13, 2010;    -   U.S. Pat. No. 8,393,514, entitled SELECTIVELY ORIENTABLE        IMPLANTABLE FASTENER CARTRIDGE, which issued on Mar. 12, 2013;    -   U.S. patent application Ser. No. 11/343,803, entitled SURGICAL        INSTRUMENT HAVING RECORDING CAPABILITIES, now U.S. Pat. No.        7,845,537;    -   U.S. patent application Ser. No. 12/031,573, entitled SURGICAL        CUTTING AND FASTENING INSTRUMENT HAVING RF ELECTRODES, filed        Feb. 14, 2008;    -   U.S. patent application Ser. No. 12/031,873, entitled END        EFFECTORS FOR A SURGICAL CUTTING AND STAPLING INSTRUMENT, filed        Feb. 15, 2008, now U.S. Pat. No. 7,980,443;    -   U.S. patent application Ser. No. 12/235,782, entitled        MOTOR-DRIVEN SURGICAL CUTTING INSTRUMENT, now U.S. Pat. No.        8,210,411;    -   U.S. patent application Ser. No. 12/235,972, entitled MOTORIZED        SURGICAL INSTRUMENT, now U.S. Pat. No. 9,050,083.    -   U.S. patent application Ser. No. 12/249,117, entitled POWERED        SURGICAL CUTTING AND STAPLING APPARATUS WITH MANUALLY        RETRACTABLE FIRING SYSTEM, now U.S. Pat. No. 8,608,045;    -   U.S. patent application Ser. No. 12/647,100, entitled        MOTOR-DRIVEN SURGICAL CUTTING INSTRUMENT WITH ELECTRIC ACTUATOR        DIRECTIONAL CONTROL ASSEMBLY, filed Dec. 24, 2009, now U.S. Pat.        No. 8,220,688;    -   U.S. patent application Ser. No. 12/893,461, entitled STAPLE        CARTRIDGE, filed Sep. 29, 2012, now U.S. Pat. No. 8,733,613;    -   U.S. patent application Ser. No. 13/036,647, entitled SURGICAL        STAPLING INSTRUMENT, filed Feb. 28, 2011, now U.S. Pat. No.        8,561,870;    -   U.S. patent application Ser. No. 13/118,241, entitled SURGICAL        STAPLING INSTRUMENTS WITH ROTATABLE STAPLE DEPLOYMENT        ARRANGEMENTS, now U.S. Pat. No. 9,072,535;    -   U.S. patent application Ser. No. 13/524,049, entitled        ARTICULATABLE SURGICAL INSTRUMENT COMPRISING A FIRING DRIVE,        filed on Jun. 15, 2012, now U.S. Pat. No. 9,101,358;    -   U.S. patent application Ser. No. 13/800,025, entitled STAPLE        CARTRIDGE TISSUE THICKNESS SENSOR SYSTEM, filed on Mar. 13,        2013, now U.S. Pat. No. 9,345,481;

U.S. patent application Ser. No. 13/800,067, entitled STAPLE CARTRIDGETISSUE THICKNESS SENSOR SYSTEM, filed on Mar. 13, 2013, now U.S. PatentApplication Publication No. 2014/0263552;

-   -   U.S. Patent Application Publication No. 2007/0175955, entitled        SURGICAL CUTTING AND FASTENING INSTRUMENT WITH CLOSURE TRIGGER        LOCKING MECHANISM, filed Jan. 31, 2006; and    -   U.S. Patent Application Publication No. 2010/0264194, entitled        SURGICAL STAPLING INSTRUMENT WITH AN ARTICULATABLE END EFFECTOR,        filed Apr. 22, 2010, now U.S. Pat. No. 8,308,040, are hereby        incorporated by reference herein.

Although various devices have been described herein in connection withcertain embodiments, modifications and variations to those embodimentsmay be implemented. Particular features, structures, or characteristicsmay be combined in any suitable manner in one or more embodiments. Thus,the particular features, structures, or characteristics illustrated ordescribed in connection with one embodiment may be combined in whole orin part, with the features, structures or characteristics of one oremore other embodiments without limitation. Also, where materials aredisclosed for certain components, other materials may be used.Furthermore, according to various embodiments, a single component may bereplaced by multiple components, and multiple components may be replacedby a single component, to perform a given function or functions. Theforegoing description and following claims are intended to cover allsuch modification and variations.

The devices disclosed herein can be designed to be disposed of after asingle use, or they can be designed to be used multiple times. In eithercase, however, a device can be reconditioned for reuse after at leastone use. Reconditioning can include any combination of the stepsincluding, but not limited to, the disassembly of the device, followedby cleaning or replacement of particular pieces of the device, andsubsequent reassembly of the device. In particular, a reconditioningfacility and/or surgical team can disassemble a device and, aftercleaning and/or replacing particular parts of the device, the device canbe reassembled for subsequent use. Those skilled in the art willappreciate that reconditioning of a device can utilize a variety oftechniques for disassembly, cleaning/replacement, and reassembly. Use ofsuch techniques, and the resulting reconditioned device, are all withinthe scope of the present application.

The devices disclosed herein may be processed before surgery. First, anew or used instrument may be obtained and, when necessary, cleaned. Theinstrument may then be sterilized. In one sterilization technique, theinstrument is placed in a closed and sealed container, such as a plasticor TYVEK bag. The container and instrument may then be placed in a fieldof radiation that can penetrate the container, such as gamma radiation,x-rays, and/or high-energy electrons. The radiation may kill bacteria onthe instrument and in the container. The sterilized instrument may thenbe stored in the sterile container. The sealed container may keep theinstrument sterile until it is opened in a medical facility. A devicemay also be sterilized using any other technique known in the art,including but not limited to beta radiation, gamma radiation, ethyleneoxide, plasma peroxide, and/or steam.

While this invention has been described as having exemplary designs, thepresent invention may be further modified within the spirit and scope ofthe disclosure. This application is therefore intended to cover anyvariations, uses, or adaptations of the invention using its generalprinciples.

What is claimed is:
 1. A staple cartridge configured for use with asurgical stapling device comprising a lockout for preventing operationof the surgical stapling device, wherein said staple cartridgecomprises: a first cam surface on said staple cartridge, wherein saidfirst cam surface is configured to move the lockout from a lockedposition to an intermediate position when said staple cartridge isinitially inserted into the surgical stapling device; and a second camsurface on said staple cartridge, wherein said second cam surface isconfigured to move the lockout from the intermediate position to anunlocked position when said staple cartridge is operably seated in thesurgical stapling device, and wherein said first cam surface is proximalto said second cam surface and vertically spaced therefrom.
 2. Thestaple cartridge of claim 1, further comprising: a cartridge body; and acartridge pan attached to said cartridge body.
 3. The staple cartridgeof claim 2, wherein said first and second cam surfaces are formed insaid cartridge pan.
 4. The staple cartridge of claim 3, furthercomprising an authentication key bent into said cartridge pan andprotruding proximally from said cartridge body, wherein said first andsecond cam surfaces are formed on said authentication key.
 5. The staplecartridge of claim 4, wherein said authentication key comprises an upperramp tab bent into said authentication key, wherein said upper ramp tabcomprises said first cam surface, wherein said authentication keyfurther comprises a lower ramp tab bent into said authentication key,wherein said lower ramp tab is located below said upper ramp tab, andwherein said lower ramp tab comprises said second cam surface.
 6. Thestaple cartridge of claim 2, wherein said first cam surface is formed insaid cartridge body, and wherein said second cam surface is formed insaid cartridge pan.
 7. The staple cartridge of claim 6, wherein saidfirst cam surface is formed on a retainer attached to said cartridgebody, and wherein said second cam surface is formed in said cartridgepan.
 8. The staple cartridge of claim 1, wherein said first cam surfacecomprises: a first upper cam surface and a second upper cam surface,wherein said first upper cam surface is angled relative to said secondupper cam surface and is proximal thereto, and wherein said second camsurface comprises: a first lower cam surface, wherein said first lowercam surface is located below said first upper cam surface and is distalthereto; and a second lower cam surface that is distal to said firstlower cam surface.
 9. The staple cartridge of claim 1, wherein when saidstaple cartridge is initially inserted into the surgical stapling devicein a longitudinal direction, said first cam surface moves the lockout afirst lateral distance to said intermediate position, and wherein whensaid staple cartridge is further longitudinally inserted into thesurgical stapling device, said second cam surface moves the lockout asecond lateral distance.
 10. A surgical stapling assembly, comprising: asurgical stapling device, comprising: a first jaw; a second jaw movablerelative to said first jaw between an open position and a closedposition; a firing member movable between a starting position and anending position during a staple firing stroke; and a lockout movablebetween a locked position wherein said lockout prevents operation ofsaid surgical stapling device and an unlocked position wherein saidsurgical stapling device is operable, and wherein said surgical staplingassembly further comprises: a staple cartridge, comprising: a cartridgebody sized to be longitudinally seated in one of said first and secondjaws; a first cam surface on said staple cartridge, wherein said firstcam surface is configured to move said lockout from said locked positionto an intermediate lateral position between said locked and saidunlocked positions when said staple cartridge is initially inserted intosaid one of said first and second jaws; and a second cam surface on saidstaple cartridge, wherein said second cam surface is configured to movesaid lockout laterally from said intermediate lateral position to saidunlocked position when said staple cartridge is fully seated in saidsurgical stapling device and wherein said first cam surface is proximalto said second cam surface.
 11. The surgical stapling assembly of claim10, wherein said lockout comprises a lockout arm movably supported insaid one of said first and second jaws, wherein said lockout arm islaterally movable between said locked position, said intermediatelateral position, and said unlocked position, wherein when said staplecartridge is initially inserted in said one of said first and secondjaws, said first cam surface contacts said lockout arm at a firstlocation to laterally move said lockout arm to said intermediate lateralposition, and wherein when said staple cartridge is fully seated in saidone of said first and second jaws, said second cam surface contacts saidlockout arm at a second location that is below said first location. 12.The surgical stapling assembly of claim 11, wherein said staplecartridge is operably seated in said first jaw, and wherein when saidlockout is in said locked position, said lockout arm prevents saidsecond jaw from moving between said open position and said closedposition.
 13. The surgical stapling assembly of claim 10, wherein saidstaple cartridge further comprises a cartridge pan attached to saidcartridge body, and wherein said cartridge pan comprises at least one ofsaid first and second cam surfaces.
 14. The surgical stapling assemblyof claim 13, wherein said cartridge body comprises said first camsurface, and wherein said cartridge pan comprises said second camsurface.
 15. The surgical stapling assembly of claim 14, wherein saidcartridge body is molded from a polymer material, and wherein said firstcam surface is formed on a first ramp that is molded to said cartridgebody.
 16. The surgical stapling assembly of claim 10, furthercomprising: a retainer, comprising: a retainer body configured to beremovably attached to said cartridge body; and an authentication keyprotruding from said retainer body, wherein said authentication keycomprises said first cam surface.
 17. The surgical stapling assembly ofclaim 10, wherein said cartridge body defines a cartridge axis, andwherein said first and second cam surfaces are located on one side ofsaid cartridge axis.